the other thing you can do to speed things up is make an effort to talk to people. whether at an auction or anything else talk to others, share connections ask them how to sell this or that. do you ever have luck with these, etc.
That's what I've done, around here the competition is unwilling to share info.. I find myself avoiding lockers that have items that I don't have a connection for, but I'll never get the connection if I don't buy it. For instance, a contractors unit. I don't have a guy that consistently looks for things like doors, plywood, cat 5 cable, etc. so I don't buy those types of units. I'm afraid to sit on a bunch of lumber..