Need help making a Recovery Boom

[Trowa Jakuard 63]

I'm currently trying to figure out how to build a Recovery Boom for the back of my Dynahead, and was wondering if anyone's done something similar before.  I was thinking an aluminum Wrecker arm with a  winch at the base. Currently, my rig's the only one that's not getting bogged down in stuff and I'm thinking of using the Recovery Boom to go fetch the other drivers' rigs when they get stuck :p  

 

[Trowa Jakuard 63]