I'm sorry. We borrowed a kevlar A-cat last week, huge chunks of paint flaking off. Glad I don't own it.
I warned that Kevlar was extremely labor intensive. I hate using it outside of molds, and I did not use the filler I pointed at to fix the chunks in my rudder tips, elected to go with graphite. MN was asking for options on wear strips. Kevlar is amongst the most abrasion resistant materials the government has made commercially available. Translation, it is also extremely hard to fair.
About the only beachcat use I can see for it is the bottom of a cat that get's dragged up and down the beach, in which case the surface really doesn't matter.
p.s. A cat you borrowed a Waterrat?
