I've applied CC to my boat twice now. Never had any issues with getting a good enough finish. That is unless you're the type of guy that likes to polish the entire hull with 300 grit wet and dry sandpaper. For us, the CC finish has been the same as any conventional AF we've applied. That said, there is no issue with sanding it either, so if you wanted you could sand it baby-bum smooth. I really doubt that makes any difference to boat speed though. My view using 300grit on your hull is more of a psychological effect, either for you, or a psy-op for your competition.
I have heard of poor ap