I freehand drew my sponson angles, no idea what my angles are. There are no dimensions of Hooty's hull other than the length is about 4 feet. Overall width is in the 20-24" range. Beyond that I don't know. Here is his rigger thread:
http://www.rcairboats.net/phpBB/view...php?f=50&t=314
I will say I'm making new drawings for the sponson rebuild and I will be using a very similar rake angle as my SI3 boats. A very smooth curve with no flat spots and sharp corners.