Yep, sides are pretty thin, they sprayed some foam in between the liner and the hull to help with floatation and it sorta helped keep the sides stiffer, but with age it comes away from the hull, there is also a fore and aft stiffner bout mid way up from console aft on the hull sides, other than that, what you feel is what you get, unless of course you rip the liner out and core the hull.