I have both PTMs and Tritons on the Supra and love them. Yes, there is a blind spot, but only right beside the boat. With my mirror, I never lose sight of my wakeboarder or surfer. The great thing about the tritons is they put very little pressure on the higher dollar soft surf boards. I also like the they are vertical so wet boards and boots drain outside the boat, not to the inside like normal racks sometimes do. On the SA with the surf locker and bimini storage, I can house 12 boards, its awesome!