If you're going off the rocks in La Jolla or PV or the tip of Coronado, having nylon on the exterior is going to save you a lot of grief. You may be surprised that most of your damage will come from just casual bumps on the bottom or rolling over the rail of the kayak/boat. That said, I know what you mean about a skin exterior being really flexible an fast in the water...
Two things- painting the wear areas with latex will work. I even do it on my nylon exterior Picasso's. Things seem to skid off it better. Then also you might want to give Andy a call at Blue Water Hunter in Santa Barbara, tell him I sent you and ask him to sew the small kevlar pads on. Cheap, thin and pretty bombproof except for that urchin that always seems to find a way...:blackeye
Oh, and hey! I was talking to Roger at Picasso down there and he has a load of the Chicle suits that are a year old/out of production, etc, and he wants to off them at a smokin' deal. Let him know I clued you in or that carpet merchant will work you, haaaard.
Hey I called you last month when I was down there to go slay some WSB. Thanks for all the calls and letters.... howz the fam?