Underskinning this weekend.
Moderators: Redneck_Randy, badmoonrising, lakerunner
Underskinning this weekend.
Got 3 - 4' sheets of 063 cut 4' 9-1/2 " long and 24' of 6" bent with a 4" x 2" 90 degree leg. Wont match the pretty bend Southbay puts on their underskin that came on the boat but Ill make it work. 
2014 Crest Classic 250 SLR2 , Mercury 300 Verado Pro , Mercury Enertia Prop
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
- Capt Sully
- Posts: 2098
- Joined: Fri Aug 03, 2012 6:41 pm
- Location: Kennesaw, Ga.
Re: Underskinning this weekend.
Dont forget to send pics 
2012 Xcurison X23C
Yamaha 90 hp 4 stroke
Dual axle full bunk trailer ready to go
All pulled with Z71 4WD Silverado
Maritime mobile KD4LZL
Lake Allatoona, NW Ga.
FVC USCG Auxiliary
Vietnam 66 / 67
Yamaha 90 hp 4 stroke
Dual axle full bunk trailer ready to go
All pulled with Z71 4WD Silverado
Maritime mobile KD4LZL
Lake Allatoona, NW Ga.
FVC USCG Auxiliary
Vietnam 66 / 67
Re: Underskinning this weekend.
Man, I want to do that to my Harris! Maybe next year. This year I have to make the wife happy and make it pretty with new seats.
Darin and Karri
24' Harris Flotebote 88hp Johnson
Beaver lake Arkansas
24' Harris Flotebote 88hp Johnson
Beaver lake Arkansas
Re: Underskinning this weekend.
Well, heres a before pic where I will need to slot the radius from the Southbay sheet so I can over lap and one of a full shot for the before and after comparison. Never noticed the black deflector before, at least I guess thats what they are . But not on every cross member. I will get some after as well.Capt Sully wrote:Dont forget to send pics
- Attachments
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- toon 2.jpg (181.58 KiB) Viewed 3525 times
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- pontoon.jpg (167.52 KiB) Viewed 2702 times
2014 Crest Classic 250 SLR2 , Mercury 300 Verado Pro , Mercury Enertia Prop
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
Re: Underskinning this weekend.
Cool deal, i'd like to see some pics when you're done. I plan on doing mine in the next few weeks
2006 20' Odyssey 220C. 2006 Mercury 90 4s. Underskinned, jackplate. 13.5x15 SS prop. 31mph gps
2001 F150 5.4 Super cab short bed 4x4
2013 F150 Ecoboost. Crew cab short bed 4x4
2001 F150 5.4 Super cab short bed 4x4
2013 F150 Ecoboost. Crew cab short bed 4x4
Re: Underskinning this weekend.
.063 is some pretty extreme stuff. I used .032 (2024 T3) & it works just fine. I used a 2" fastner (SS self-tapping screws) spacing & still have found a few loose ones, mostly near the rear 1/3 toon (which has the engine on it).
Keep in mind that automotive pop-rivets (even the steel shank ones) are nowhere near as strong as a SS screw, they will work loose.
Keep in mind that automotive pop-rivets (even the steel shank ones) are nowhere near as strong as a SS screw, they will work loose.
1994 Party Cruiser 32'
115 Mercury O/B
Restored & upgraded
115 Mercury O/B
Restored & upgraded
Re: Underskinning this weekend.
[quote="belercous"].063 is some pretty extreme stuff. I used .032 (2024 T3) & it works just fine. I used a 2" fastner (SS self-tapping screws) spacing & still have found a few loose ones, mostly near the rear 1/3 toon (which has the engine on it).
Keep in mind that automotive pop-rivets (even the steel shank ones) are nowhere near as strong as a SS screw, they will work loose.[/quote
.032 seemed a bit thin to me but to each their own. Matches up to what Southbay uses for thickness, so if its good enough for them.... I also used stainless steel rivets . Southbay uses aluminum rivets but I used stainless steel, they had a broader grip range for my use.. I dont think they will work loose anymore than a screw can work loose from vibrations, if so i dont think the manufacturer would be using rivets. All the Southbays I saw with full skin were riveted.
I feel pretty good about the install.
Keep in mind that automotive pop-rivets (even the steel shank ones) are nowhere near as strong as a SS screw, they will work loose.[/quote
.032 seemed a bit thin to me but to each their own. Matches up to what Southbay uses for thickness, so if its good enough for them.... I also used stainless steel rivets . Southbay uses aluminum rivets but I used stainless steel, they had a broader grip range for my use.. I dont think they will work loose anymore than a screw can work loose from vibrations, if so i dont think the manufacturer would be using rivets. All the Southbays I saw with full skin were riveted.
I feel pretty good about the install.
2014 Crest Classic 250 SLR2 , Mercury 300 Verado Pro , Mercury Enertia Prop
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
- hootowlhollow
- Posts: 134
- Joined: Thu Apr 25, 2013 1:54 pm
Re: Underskinning this weekend.
Looks cool. I think that may be a winter project for me.
2013 Bennington 24SSRL
150 hp Yamaha
1 Wife and 3 Boys
150 hp Yamaha
1 Wife and 3 Boys
Re: Underskinning this weekend.
Where is the 
Truman Lake
1986 24' Playcraft "The Georgia Peach"
1996 Evinrude 88 HP
14x11 Prop
1986 24' Playcraft "The Georgia Peach"
1996 Evinrude 88 HP
14x11 Prop
Re: Underskinning this weekend.
LOL, sorry guys . I forgot my camera and the phone pics sucked. Ill get some of the finished product soon. Although now that shes officially launched for the season, dont be upset if there are a few bikinis in the background. 
2014 Crest Classic 250 SLR2 , Mercury 300 Verado Pro , Mercury Enertia Prop
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
Re: Underskinning this weekend.
We'll just have to suffer with whatever background is there I guesssmoker62 wrote:LOL, sorry guys . I forgot my camera and the phone pics sucked. Ill get some of the finished product soon. Although now that shes officially launched for the season, dont be upset if there are a few bikinis in the background.
2006 24' Manitou Osprey Pro SHP F2
175 Yamaha VMax
2016 Ford F150
175 Yamaha VMax
2016 Ford F150
Re: Underskinning this weekend.
I am patiently waiting the news about this. Im planning on doing mine in the next month. So your info will be greatly appreciated. 
Re: Underskinning this weekend.
Well, I wont be going up North to get pics this weekend. I forgot about Mothers Day and my daughters are coming to town to spend time with my wife. Last year I was 24-25 mph depending on wind , waves and weight. Dropped in with the new skins and ran right to a steady 27 with a few GPS ticks to 28.
Lake was calm , no wind, cool 50 ish morning which most likely helped a lot and full tank of fuel. I was happy . Did it mostly to stop the wave braking but any speed gains would be a plus.
Lake was calm , no wind, cool 50 ish morning which most likely helped a lot and full tank of fuel. I was happy . Did it mostly to stop the wave braking but any speed gains would be a plus.
2014 Crest Classic 250 SLR2 , Mercury 300 Verado Pro , Mercury Enertia Prop
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
2012 South Bay 522 , Merc 115 4S, Mercury Spitfire 4 blade prop-13 pitch light 25 mph gps, 11 pitch heavy - Sold
Re: Underskinning this weekend.
2 mph is a good gain. Did the ride improve?
Re: Underskinning this weekend.
Agreed 2 mph is huge on a pontoon. I'd love to gain another 1-2. I just gained 4-5mph by getting my motor our of the water over 8 inches.
2006 20' Odyssey 220C. 2006 Mercury 90 4s. Underskinned, jackplate. 13.5x15 SS prop. 31mph gps
2001 F150 5.4 Super cab short bed 4x4
2013 F150 Ecoboost. Crew cab short bed 4x4
2001 F150 5.4 Super cab short bed 4x4
2013 F150 Ecoboost. Crew cab short bed 4x4
