It’s quite simple, really. After playing one’s set, one does not pile one’s gear in front of the stage. If one must do so, one must immediately load the gear out and put it back in one’s van. This gear transferral is to be completed before the next band is finished setting up. It is extremely impolite for one to load said gear out while aforementioned band is playing their set.

The short version: Get your shit off the stage and out of the way before the next band goes on. If you are a slack bastard and can’t get it done, leave it alone. You’re already rude, don’t make it worse by being a distraction, too.