BWhite, I was thinking of that very design just last week when I had to move mine the hard way.... a floor jack and planks! That's easy and quick to whip together from what I see of it. Just some channel iron, good quality casters, get out the chop saw, and my trusty Lincoln crackerbox! Looks like a winter project for me so I have it come Spring.
Chuck, scaffold wheels in thew shoe sleeves? Clever... hmmm, that would let us trip-edge owners have more access to the blade's edge as well for painting, etc.