Glad the spring clamps worked for you - they usually do. Wheel hop is usually caused by the front of the spring wrapping up, or the deflection and rebound of the spring eye bushings. Shock absorbers can dampen the effect, but are not the cause of it. And pinion angle has nothing to do with it - it deals with driveshaft vibration and u-joint life and has nothing to do with wheel hop or traction.