This is one effect I've been wanting to work on and I'm trying to figure out the optimal angle for it. It seems pretty angle sensitive when I'm practicing it. I'm having a hard time with the Kaps subtlety and the clip used. I thought the optimal angle for the Kaps subtlety would be if your spectator was directly in front of you, but the back clip that is used should have the spectator looking down. I'm having a good amount of difficulty with this and I'm hoping someone that performs this normally could help me out (either in this thread or a PM). Thanks.