I know this is an old post, but I just had a similar problem with the turboswing bar and bracket bending. When I contacted Turboswing and sent them the pictures, they noticed that the tubes that the bar goes into were installed upside down just like the ones in your picture. The curved end is supposed to be on the bottom. I believe the issue is that when it is installed upside down, it sticks up from the bracket on the boat and creates a moment arm for the forces of pulling someone on tubes to bend the bracket and bar.
See page 4 from the manual:
https://turboswing.com/pub/media/turbos ... ctions.pdf
They also gave this advice:
We do not hear that the bar bends often. As far as the brackets, this could have been caused by improper installation or an extremely hard pull to the tow bar. To prevent this from happening to you again, we have a couple of suggestions.
Please make sure the grooved nuts are properly seated into the tube holder during installation. You can even tighten groove nuts before attaching to the motor mounts, please see attached drawing. A loose or improperly seated grooved nut could cause the bracket to malfunction. The TurboSwing is very strong, but not indestructible. Please make sure your tube is properly inflated so it will glide across the top of the water. If the tube starts to dive under water, throttle down immediately. Please ask kids and other riders to lean back when taking off. Gradually slow the boat to prevent the nose dive of the tube. If slack develops in rope during a whip, please throttle down immediately. Basically, try your best to keep the tube on top of the water with a taut, tightly drawn rope at all times. If the tube goes under and you continue to pull, it can put thousands of pounds of pressure on the product and the brackets will bend. Inevitably, something has to give.
Most common cause for the brackets/bar to fail is an extremely hard pull.