Nope, no erster beds here... just sandy/gravelly beaches and occasionally getting hung up on an old reef flat. If the bottom's that bad, I agree, I'd cover everything, probably twice. Luckily I don't have to intentionally haul a small boat up on that kind of bottom.
I suppose I didn't express my thought well enough, and might try again: just like my knees, toes and elbows, I have noticed that my hulls' forefoot and chines have taken more than their fare of scrapes, compared to anywhere else on the hull, hence I'd likely concentrate the abrasion resistance initiatives in those areas. Especially if oysters are on the menu.
pat.