Slaw- it may be like asking a gambler how they 'win' but my experience is, if you go with a set list in mind, you will miss the jewels that are there. I collect certain UK pressings, and many of the shows in the States don't have the ones I'm after--but they have other things. One of the most successful collectors I know devotes the entire day of each show to culling through every bin- don't ask me how he has the patience for it. I get bored easily, and restless- I wanna go in, grab the goodies, and split. But, success, I think, involves patience, crate digging, and knowing that what you are finding in those bins that has value, musically, sonically, or commercially, whether or not it is on your shortlist.