[McGillicuddy]

As strick may have mentioned, you don't want to leave that cap off too long or the gunwales will fall and deform some, then getting the cap back on will be extra work. Some of the guys have made retainers out of 2x4s by cross-cutting slots about 7-1/2' apart and placing the slots over the gunwale edges in 2 or 3 spots to keep the beam where it should be. That helps to keep the sagging at bay. Not sure what you mean about doing away with the liner - is your intent to core the hull? Others probably have a better idea on this but me thinks the liner adds considerably structural integrity to the boat. Good luck, looks like a nice clean project.