I recently came up with a force where you spread the cards and quickly flash the faces and they choose one. However, this force only hits about 80% of the time, and I have a back-up plan for that, (culling the correct card to the top and doing a color change, namely). However, in order to improve my force, I would like to know all the ways that seen card forces work. I know that a card shown for longer than the rest (like Dan and Dave's top card force) will the make the card almost guaranteed to be chosen. I also know that cards that are "bigger" than the rest scream out to be chosen, which is basically how the force works (although it uses a strange method to do so). If their any other factors that allow a seen card to be chosen other than the two I've listed that I could try to add to make the force more accurate? Also, I suppose the force could be done slowly, but I'm not sure if it will be obvious to the audience that the force card is bigger than the rest, but I doubt they would notice with enough practice.
Thanks,
Peter
Thanks,
Peter