Peter,
My 9.9 four stroke was originally mounted on a bracket you could raise and lower. It broke (catastophically) in the first 3 months. I got my money back and simply mounted a Garelick backboard directly to the transom and it cleared Bennett trim tabs by about an inch with the motor down. When tilted up it clears the water by a couple of inches.
All in all it was a lot less expensive ($50) and stronger. In addition, I was able to get a steering rod from Cabelas to remote steer the kicker. Look at the pictures in the tech library that shows the results: