Chase, a boat fender will collapse when pulled down by a fish. Pay attention to George and pick a couple bullet shaped lobster floats. They cost less than 10 bucks each. More than enough for wahoos.
I kind of figured that. I was just asking because one of my dive buddy's uses one. Luckily he didn't see any wahoo or his rig would've probably gone bye bye. I took the lazy route and ended up getting a 12L foam blown RA float. As Dan said about the lifeguard float, it has some weight outside of the water, but in the water I forgot it was even there.