After reading all of these posts, what I don't understand is the use of rear bake on cursers type bikes.....I copied this from riding tip section:

"Try to use the front brake only - and don't grab it. You will slow up quicker using the front because the weight of the bike is transferred to the front of the machine as it slows, effectively driving the front wheel into the Tarmac.

The rear becomes very light when this is happening, so heavy use of the back brake will only result in locking the back wheel up - because the back tyre is making, so little contact with the road. Even the act of closing the throttle transfers weight to the front of the bike, so for this drill you are best off leaving the back brake alone"

So why do you guys rely on the rear brake so much