Well, I do sign "chance" a little differently: Both relaxed five hands facing the chest, then flipping them down and a little out, as in "breaking through."
But learning different sleights of hand is the reason I appreciate this game.
You kind of gave it to me. Is is "Ghost of a chance"? I'm an admirer of ghosts ever since Jennifer Love Hewitt started whispering to 'em.
You Got it!