Opie... I'd suggest you look up some of Robert Nelsons old mspts on doing Malls & Shopping Centers... that may give you some of the specifics you're looking for.
When Marcy and I used to work the Renaissance Fairs we used various gags as lures. One of the things a previous post reminded me of, was the two-way Telepathy bit we'd do as a comeon... I would be in the back doing a Reading and she'd merely touch items out front, to prove to folks I was "gifted" (is was that touched?)... anywho... I would name the items, colors, etc. It was a blast and very effective for building tips.
I've done plenty of street fairs, carnivals, etc. over the years and I'm not hesitant to say that selling a psychic bit ain't easy! It's harder than barking off Svengalli decks or pitching the blow-off at the end of the side show.
Typically we would have one person working the Ballet (out front) and at least two or three people in the back doing Readings. Add to this a small retail counter with crystals, amulets, tarot decks, etc. I would do all the basic gags up front using a Swami, PW, MR, etc. The pace had to be rather quick, fun and of course, generate interests in what we had to offer.
I'll not go into all the details, but there was a lot involved and unless you have a big family that's interested in traveling full time on the weekends and hustle their butts off (14 hour days at minimum)... well, I don't recommend trying it. Too, you must look at this kind of action as a marketing opportunity more than a mode for making a decent living... believe me, there are days that you can pull in several grand with an operation of this kind... there are also WEEKS when you barely make expenses. In our case we had 5 young mouths to feed, plus ourselves and two huge dogs... we wont even get into the gas gusling camper, costumes, etc.
Yes, there are easier ways of working it, I've experimented with many. Bottom line is, none of it is easy. The best deal is to learn how to do an effective Reading, how to observe folks, and hit the area coffee houses, tea houses, etc. and do mini-sessions for folks @ $10.00 to $35.00 a session (I do 10-15 minutes for $35.00 now days and people think they're getting a deal.)Catch is, you need to know an actual divination system and not the hookem all the magic books try to get you to buy into. Ask anyone that works either side of the fence the way I do, they'll all tell you the same thing.