Based on experience attending various shows over the years I would suggest the following preparation (clearly, other attendees that I've run into have undertaken this strategy):
1) No bathing for at least one week prior to the event. You want to be really ripe when you're there.
2) Dirty clothes adds to the effect of above.
3) Be sure to wear pants that are at least 1-2 sizes smaller than you would normally. This will ensure lots of exposure of bum cleavage when you're bending down and pawing through the dollar records on the floor, even on the stands. Lots of bum cleavage.
Do the above and you'll be sure to have lots of room and free reign to corner the selections you really want. Nobody else will want to get too close, leaving you with prime selection.