Rick, I had my Throttle in the same position as you have yours now. I have to agree with Mobilcam that your arm will fatigue in a race with that set up. I had a harder time keeping it WOT when racing in the big and heavy chop. Every time the boat lands or slams down so does your arm. A straight forward and back motion with a arm rest for support works great. Just some thoughts. It is a cool project.
MD