Per Richard Ferguson:
I talked to the
owner, and he had just managed to crack the fiberglass cockpit by
putting too much weight on his feet. Apparently these boats are built
very light and thin.

Depends on the ski.

A lot of racing skis come in at about 25 pounds and are correspondingly fragile.

The ski I paddle is build to something called "Lifeguard Specification" which
mandates a weight of no less than 40 pounds, certain hull dimensions (19' long x
19" wide), and nothing (like an over-the-stern rudder) that can cut somebody
floundering around in the surf.

It's still something less than robust.... but I've clambered around on it quite
a bit so far without breaking anything. Now that I've gone and said that, I'll
probably cave in the deck or something next time I try to mount it in the water.
-)
--
PeteCresswell