Lots of hooking when I played USTA league tennis. It's very dishonest. But so is tournament play - if its not being officiated (obviously).
I actually tried to change my game up and go for less so players would feel less guilty about hooking. I'd say that the players that don't experience any hooking are likely playing up at a higher level of tennis then I was.
I supsect most good players don't really feel the need to hook because they have confidence in their game. Raiden plays what in the 5.0s? Am I right?