Cy
Yea its not a bad idea to jack a little weight up front. We have used as much as 10 oz under the front of the tunnel and that seems to work quite well.
Bottom line.. The prop is going to have a huge impact on the ride of the hull. The CG is also important but we have yet to settle on its exact location.
In our testing we have found the 1740 to be the best for our setups but a cupped 1640 is also a prop that works well. The low lift props do not seem to work anywhere as nice as the above, but its all setup..
Props we tested.
1740 (best general heat racing prop)
1740/3
1640 (next best heat racing prop, with cupping mods)
1440
1.6
1.6/3
1445
1450
1938 (56mph) fastest in SAW
215
X-440
X-442
X-640
JG-RG-25
H2 (dam fast but likes a lot of motor)
H4
Grim