It's mainly personal preference.
I like the stock plate unmodified. I haven't tried one with a D Cut, but don't think I'd like it.
I don't like an extended rideplate (longer than factory) for freestyle. I had a Worx Dominator, but it's only good for carving turns. It's too long and forces the nose into the water too much for freestyle (Definitely more suited for racing).
I wouldn't want anything different from the stock plate