not sure what you are asking but on a tin boat most would be to remove the rubber. should slide out one end, then the aluminum trim would be fastened to hull with rivits that would need to be drilled out
After I took out the rubber bumper , the trim that it slid into did not have any fasteners visible, the boat is a 16ft fiberglass crestliner 1772. I tried prying it off but it didn't move.
Reading some other Crestliner threads suggests that the manufacturer glued these rubrails on, and used staples to join the upper and lower hull sections. There are apparently a screw used on each end (just around the aft of the boat onto the transom, but it can be pried loose with a little finesse and some mild heat.
None of the threads I read contained the "after" story regarding whether the aluminum was able to be reused.
the upper and lower hull sections are definantly stapled, and there was one screw at the transom end (rusted away). Is it possible that the staples are holding it in place? A little persuasion isn't working