I 'acquired' a furniture dolly from my father-n-law when I moved my gunsafe. I think 2 peices of 3/4" plywood laminated together with 3" heavy duty casters should do the job just fine.:thumbsup:

This thread gave me another idea.

How about just throwing some carpet down and bolting a 2x4 to the floor of your garage about a foot or two from the wall and just lean your doors against the wall? :dontknow2:

Obviously, you lose the benefit of being able to roll your doors around, and it's kind of semi-permanent, but it's extremely cheap! I think I might have to try that...