Gang,
I've been wringing out some of Kerry's 1/2 inch boards. Let me tell ya', these things ROCK. Almost no air need to work them, and you won't believe the range.
The tip of the board is ultrasonic, and there are no pitch breaks or flat spots.
Truely amazing, and there's one with a permanent ride on my lanyard (along with the 220Swift call).
Grab one while you can!
Rudy