Excellent work boss! YOU have manage to do something I've never seen a painter do with the ocean. Putting this angle on it you've managed to make it feel as if all who view this piece are right there with surfer riding the waves! Most Excellent!
Well water always s a problem since it looks so different in every situation. For that the only real advise i can give is looking at reference pictures. For technique i would suggest using willow charcoal and to smug it over the surface and then take an eraser and do the reflections with it. I often do clouds that way. Hope that helps!