i've been planning on incorporating a 4 tap jockey box with a dolly. i'll take a piece of plywood and place that at the bottom to hold the four kegs with the co2 tank in the middle. i'll use a ratchet strap to cinch those together and hold them to the dolly. then i'll find a way to clamp the cooler to the dolly above that. i was thinking u-bolts through the cooler, but we'll see. i'm hoping to have it done by this weekend, so i'll post some pictures.