Originally Posted by due ruote

I posted an Instructable link at #100. But the one I made is simpler. I just used 2x4 lumber, ripped it to about 2” on a table saw, and made a simple frame. The 2” height is just tall enough to get the roller legs off the floor. The plywood on the ends adds a bit of structural stability and gave me room to attach the tie downs for bungies. That’s it for the frame. The length is 6-1/2’, which is what I saw suggested on a couple videos.
I had the rollers (a cheap Performance unit), and I had the skate wheels, but you can find cheap sets on eBay. I took the rollers apart and drilled for the wheel bolts on a drill press, but you wouldn’t have to do that - a hand drill would work fine.