Ute and trailer after mods

So here the rig ready to pick up the mast. The draw-bar has a 4.6 metre extension on it, made from 75mm x 75mm box section stell. This is bolted in place with a couple of large bolts and two U-bolts. The draw-bar also has wiring which acts as an extension cord for the existing trailer wiring to the ute. The idea being that I can remove the draw-bar extension within a couple of minutes and I have my standard light trailer back again.
The trailer has a tri-pod, mounted just forward of the axle, and this has a swiveling head to allow the load to move when cornering. The ute also has a swiveling head which also incorporates rollers to allow the mast to move for'd and aft as the load "shortens" when cornering.