When considering the tightness of the trampoline, you only need to remember one thing. The tighter, the better. The trampoline actually makes a lot of difference when it comes to how your boat handles and preforms. The looser the tramp is the harder time it will have flying, and pick up speed, the tighter the tramp, the more the hulls will be parallel. An easy test is to unstrap your boat on the trailer, and start to lift up on on of the hulls in the front, and see how far you can get before the other hull starts to come up to. (They should be pretty close.)

I have read in some book that they recommend getting pliers and using them to tighten up the tramp, or if you have a line grip tool, you can use that as well. In any case you want it to be as tight as possible.

On the subject of trampolines as well, newer trampolines have double the grommets in the tramp. This allows it to get the tramp even tighter and more secure. One technique that I have heard of people doing is to use two smaller lines running through the tramp, and then tightening them up with pliers. In any case, get your tramp as tight as you can!

*Check out this Trampoline Cover To Protect Your Expensive Tramp

Tramp TightnessIf you look close, you can see the tramp bends the rails in.