While there may be 1001 ways to force a card from a normal deck, each has a level of suspicion. I
personally like to tell a brief story about the 1000 ways, then demonstrate in a reveal method a few
fairly obvious ways to force cards in a routine. After that, I ask a spectator to shuffle, then lay
out the force deck "ribbon spread" and say, "Without any influence from me, and without me handling
the deck at all, please freely choose." Then I say "This is the only way I have come up with that
there can be no force of any card, a completely random and free choice". It's a very solid seller,
then move into any reveal method you choose.
These decks are great for a variety of solid card
effects, the draw back is you are good for about 1 trick per deck, per performance, two if you are
ballsy and have a clever enough remark to follow why they have freely drawn the same card twice.
That's why I own several force decks. It's a small draw back given the strength of the effect you
choose.