Originally Posted by Jiggle

Not staying seated if the pressure drops is a serious flaw that should not be ignored. Can you get it re-seated on the trail after a puncture? Probably not. Well, maybe so. If you are a cowboy, maybe.

What I do is cut my Gorilla tape narrow and build up the center of the rim bed, leaving space between the rim edge for the tire's bead to sit. Then I'll cover the whole thing in slick tubeless tape. Yes, it makes putting on tubeless tires hard. But the bead is then locked in, and I will never burp. Also it makes seating tires very easy.