In looking at the setup in the link, I would ditch the straps and try and connect straight to the keg with the clips. But I am sure you already know that. Other than that, I think wheels on the keezer would be better. You can make a frame out of 2x4's and use some metal strapping for support, or run a couple of extra 2x4's as joists in between. Very simple, in my mind, and then get some cheap casters and screw them to the 2x4 frame. Done. Won't be pretty, but it will do the job. Casters can lock, therefore keeping your keezer from going away, so to speak. RR