Use a dolly.
3/4" Marine plywood same size as cab.
Spray paint black.
Bolt nice casters counter sink bolt heads if possible.
Two stationary two turning. Will better allow curb hopping and has increased stability.
Pro staple a Welcome Mat cut to same dimensions as dolly to dolly.
Longest wait? Waiting for paint to dry.

Done!
Use for other gear too!
Welcome mat will act like it's glued to cab.
Can use on it's side too.
Cost? Few dollars more than casters.
Enjoy.