Well a couple months later, I get a letter in the mail from my boat's loan company asking me to verify my loan information. On the paper, I see the dealership put my bi-weekly income as my monthly income. Which is a few thousand $ difference in monthly income. This explains why I had to haggle so much when loan shopping through the dealership.
Lesson learned...Always verify important information when making large purchases.
There's nothing I can do about it now as I have the boat and my loan (which is still on good terms, just not the best I could have gotten.)