My way of whipping:
1. seat down
2. lean back
3. lean left (right)
4. when the bike wants to turn back stop leaning back and left, or maybe even help it a bit to the right.
5. practice
6. practice
7. practice
I was working on my set-up the other day for a little more whip control. This worked for me, depending on your current set-up, might help, might make it worse.
Try this tho, little at a time. It worked for me pretty good.
-Find a Stability you are comfortable on.
-Put leveling at 20
-Turn Down your Roll Dampning
-Play with your Roll Limit Angle (not sure what mine is, im not at my PC. I think its 40-45.)
-Turn Up your Max steering force
-Turn down your steering dampning.
-DON'T use sticky sit/dab. Lean back and as you press the sit button going off the face, it will put the weight on the back of the bike kicking the ass end out. Whip it, Hold you sit/dab and bring the ass end back over to land it.
The roll damp/limit angle should give you more inital lean. While you turn up your steering force, your rider will SNAP the bars more to say at the face when you go to throw out your whip. But as I turned down my steering dampning this made my rider feel just as stable as I was before I adjusted the roll dampning/roll limit. Again, this is all just my personal opinion in setting up for whips. It helped me.