For the front cushions....I positioned the strap a little more to the back of the boat and not centered. I found during my test....that the wider part of the cushion would want to fall in first. And from the few nicks that were from it falling in the compartment...they were more towards the back. Also....make sure the center hull side of the strap is inset enough to not be seen when the cushion is on. I made this mistake on the fronts and had to put the rubber coating spray stuff in white to have it not be seen. The center cushions in the boat (before hinges installed) the straps were installed in the center of the cushion.
D