I'm pretty sure that I read somewhere that WM CPP+ is a rebranded well known ablative - maybe Petit but I could be wrong about the name.
Anyway, not sure how much my experience helps as I am in the NE (Long Island Sound) but, for what it's worth, I used CPP+ for about ten years with no complaints. Of course here we typically pull our boats every season, I more recently did so every two, and give it an extra coat when pulled.
However, experiences of others persuaded me to try water-based Petit Hydrocoat - touting effectiveness, ease of use (lack of noxious fumes/ease of clean up) and mostly easier prep (minimal if any sanding). Can't say I'm 100% convinced yet after a couple of years but it's certainly much better re ease of use and seems almost as effective if not equally so.