If the originator of this thread would like to make a comment on my idea for a two way forcing deck then please feel free its your thread.
MagicDiscoMan - I do quite like the idea of using "pick an odd number between 2-24" - although there is still that niggle that when the spectator reconstructs the trick they wonder why it wasn't a number between 1 and 52, Maybe this is just a case of Magicians paranoia, maybe not.
There's also the thought that they will think "ah - why did it have to be an odd number? Maybe every other card is..." even if that has nothing to do with how the trick is done. I don't like them looking smug thinking they know how it is done.
I will certainly be experimenting with it though, and I will let you know how I get on.
As for using the svangali decks to force the cards - that kinda misses the point of the thread. I already know numerous ways of forcing a card, some very strong and very simple - the question was generalised than that, I was more looking for ideas on how to force the spectator to do exactly what you want and still leave them with the feeling that they have had a totally free will.
In fact with the particular trick I had in mind - you really do have to do it with a two way forcing deck - the whole trick revolves around that concept, so the example in this case was very relevant.
In saying that I am very pleased with the discussion that has come about from this thread. It has been very helpful to me.
Particularly Ive found extremely interesting the points made on the use of body language, NVC (Non Verbal Communication) and NLP (Neuro Linguistic Programming) and it has certainly made me want to read up a lot more on these subjects.
Maybe even consider an OU course (if there is one).
so a special thanks there to MagicBilly, HappyToad and BaBaBoom