The worst case scenario is people waiting a long time to stop. Most of the time though it seems that
if I draw out the presentation until the moment I tell them to say stop they are more impatient and
likely to stop sooner than later. Basically I get a desire in them to stop sooner than later but I
need to be sure that I've put enough cards down for my method to work. If they wait too long, it
creates a possible angle problem when lifting up the upper portion, as well as a discrepancy that
maybe visible but can be easily taken care of with time misdirection. A little time is direction and
they forget how many cards are where. Especially if you were talking the entire time you were
dealing the cards down. So it's not perfect but if you get it down right you won't need the Gimmicks
at all...
I wanted to mention that i do not like the idea of predicting the card on the bill at all. I ultimately think it weakens the effect with too much redundancy. Id rather tell them i DIDN'T know if they would stop at my lucky card and just to make sure i get to keep my dollar if they did i made sure there are no other cards in the deck... See this card has no value at all, etc...