-Magicians are generally just laymen with rabbits on their business cards...
haha this quote made my day.
Anyways, don't be lazy. Magicians
know magician foolers. That's why you're asking us. And if you're performing for guys older than you, chances are that they already know the trick if it's very "public access". (You know, in a well known book or something).
The best way to fool magicians is to come up with your own trick, something no other magician has seen or learned before, and make it in such a way that it completely stomps on any ideas magicians would have on how to do a trick. Maybe use a gimmick, maybe use a sleight ot principle you learned back when you first started and forgot about, or (this one's my favorite) ask a layperson how they would accomplish a certain effect.
Sometimes we magicians get so into our little bubble of what we think is "acceptable" as a method/trick that we lose the imagination of a layperson. They might come up with some out of the box thing that no magician will have ever thought of that's so crazy that it just might work.