Many moons ago, I got stolen from my Cav squadron and sentenced to a tour in a Brigade HHC arms room. I'd occasionally get paroled to the motor pool (Asst. Jr. vehicle dispatcher IIRC)
Anyhow in the motor-daddy's office was a very olde (1950s?) FM on improvised recovery techniques... That log on the trailer is one of those...
One can use a spare tire (or tarpaulin etc) for an improvised winch anchor point. COTS is a Pull-Pal™ and saves a LOT of digging.
Having some time in & around the Jeeping/4-wheeling scene, I've observed plenty of redneck get-home fixes. I may have been guilty of shredding both a primary tire and the spare outside of Murphy NC... I happened to recall a pile of old tires some slob had dumped alongside Beaver Dam Rd, so I sent a runner & by gawd there was one 'close enough' (which held air & had some tread.) That led to my first time breaking down & remounting a MV tire in the field. Fun stuff.
If that FM is still in print, it's a worthwhile read if one is mechanized or has an interest... -> here's a PDF that gets to the heart of it...
http://www.adrenalina4x4.org.bo/Arti...overy_ch22.pdf
Also, a Skilcraft ball-point pen body (the pointy end IIRC) can be used as a bypass/temp replacement for a clogged fuel filter on an M151.