If the bike won't power wheelie (which is should), try the bounce technique. Keep it in 1st, accelerate to about 10 -12k, chop the throttle closed so that the front end dives a little, then whack the throttle open again. This technique is a little easier to control than slipping or dumping the clutch.
Wynona loved her big brown beaver
And she stroked him all the time.
She pricked her finger one day and it
Occurred to her she might have a porcupine