using jbingham pic what about keeping the front wheel in front of the pilot and puting him in a kind of capsule/faring thingy? to help with the aerodynamics. This could also include the front wheel. Then the windward wheel could be vertical and the downwind wheel raked in.
If my cad skills were as good as andyc then i'd draw it but i have trouble drawing curved bits of wire at the mo. BTW i use TurboCAD is that any good?