The tube that I have has a thick canvas exterior and an inflatable bladder inside of it. Not saying it wouldn’t be possible to poke a hole in it but you’d really have to yank a hook into it to do so. Definitely would make sure you have a pfd on just in case. Once the weather cools down a little here I’m planning another float trip down the Saluda for smallmouth and trout. I’ll post up a full rundown once I get a chance to go again.