You've not heard of WRI yet? Even so it's been plastered all over the race forum? *shakes head*
WRI (waterrocket interval) = going 1 minute with all you got, while trying to rip the cleats off and break the cranks during the initial acceleration.

I asked a somewhat similar question a few days ago and the answers I got was to train leg speed. Meaning, start at 90-100 rpm and wind the gears out to 130-140rpm out of the saddle at full power.

Leg speed = snap