Selling the No Call?

[Dan_ref]

I've used the finger-tip on these sorts of plays to communicate what I've seen on an over & back or OOB call. I think they are fine if not over done. One "no-call" signal I would not use is when you have nothing on a blocked shot. You know, palm to palm to indicate the contact was on the ball. You don't want to be signalling "no foul" as your partner is blowing the whistle.