The Colorado River Shootist Club is in Yuma. they shoot the third Sunday of the month. Check them out, used to shoot their annual in January called Territorial Prison Breakout, really good 2 day shoot. Never did shoot their monthly as it was a little far.
Several years ago I took the measurements off a pards cart, I think it was from Off The Wall Carts and called the Jack Rabbit. I made a few changes and once disassembled I can get it in the trunk of my Goldwing trike. It comes apart and goes back together pretty easy.