Thanks for the insight. The owner told me he had a professional that does hull work for yachts do the bottom job. Am I correct that the worst case scenario here is I would have to keep an eye on it and potentially have to redo the bottom job again?
Well, everybody who sails with a cat starting and ending on a beach should keep an eye on wear and tear of the hull bottoms.
In my spot for instance, I have to tow my cat with my tractor passing sandbanks with a long line. I don't take the risk of getting stuck with my tractor in a seacreek.
Ofcourse I do this protective bottom-layer by myself. Underneath I have placed an extra kevlar-epoxy layer, to be sure.
Last time I renewed the bottomlayer is more than 3 years ago and I sail about 50-70 days a year.