My plan is similar, but has receiver tubing at back (as yours), plus top and bottom. That allows use of a ball mounts, grab hook mounts, clevis mounts, chisel/buster mount on bottom, etc. And all mounts can be set at any location for whatever reason. A simple extension of my standard tool mount. I have vises, bench grinders, tubing bender, bar/strap bender (like a Hosfeld), bead roller, brake/shear, etc, all mounted on 2" tubing. These can be mounted in one of 3 receivers on my heavy fab table, 2 on my my rolling heavy project/grinding table (weights about 400 lbs), a fixed floor mount column (mostly for the roll bar tubing bender), or adapters that let me mount any of it from a truck receiver hitch (front and rear on my 1 ton K5, or rears on C10 and 2500HD). Very flexible, and when I get it done (with cooler weather) also my tractor with the new 3 point adapter. Will probably make a clamp on for the FEL bucket as well. Receiver tubing makes a great standard mount for flexible options. Additions I foresee include a mini boom, lift platform (similar to the load carriers that fit vehicle receiver hitches), Forks, and so on.
