I just finished experimenting with different settings on my blast. I found that setting the outdrive 2/3 up works great. This leaves the drive pointing slightly down. Any higher and the prop cavitates badly and I can't get on plane no matter how slowly I try to accelerate. Any lower and the boat won't plane at all. I'm running a Reedy 19 turn spec motor with a 6 cell pack and water cooling. I made my own brass and aluminum and brass cooling coils, and brass works alot better. The brass tubing is harder to form but worth it. The motor is slightly warm to the touch after a run. I'm pretty happy with this setup, the boat is pretty quick and I get a cool 3' high rooster tail.