Are there any known issues too look for with these hulls

Rot even in cabin stringer!

YEAH to what Jeff32 said---and more than that !!! There is much I could say here as I personally know of some horror stories, but I will give the Reader's Digest version----each particular boat will vary, but just make sure you have a real and very competent Marine Survey completed on the boat you are looking to buy, and start with the transom, stringers, bulkheads, etc---water rotted wood behind that fiberglass is one of the FIRST major things you need to be looking for when buying a used boat.

Rot, Rot, did I say ROT? I bought a 43, tapped every area of the transom and bilge, all were dry. I never thought to check the cabin stringers when everything else looked good. Foolish move. The cabin was 100% ROTTEN. Found out later that the boat had been stored with the bow down and it had filled with water and sat like that for some time. Needless to say, every piece of wood I pulled was rotten, or hollow cavities as the wood rotted too the point of becoming DIRT. If buying a Scarab, buyer beware and hire a surveyor, I don't care what you are paying for it. A $5000 boat can turn into a $50k nightmare. I'm my case I think I started at $40k for the boat. I was lucky enough to have parted it out and ended up making a few dollars. Never again!