Go for it!!
I have hauled 3 M105s from Ft. Carson to northeast of Denver, 98 mi., with no problem, 2 behind my Original Bronco and 1 behind a big Dodge duelly.
There is not much chance of the brakes being locked up at GL. In the Army Reserves we occasionally had a problem with the shoes sticking if they had set for a few months. All we had to do was go back and forth with them a few times and they came loose. GL has been moving the trailers around and they should be OK.
Check this thread out about the brakes:
http://www.steelsoldiers.com/index.php?name=PNphpBB2&file=viewtopic&t=15404&postdays=0&postorder=asc
If you have a problem, PM me. I have a source on part.
You can haul an empty M105 behind something like my Original Bronco without trailer brakes as long as you take reasonable care. Napa has a set of magnetic lights for $55 but I saw a similar pair (actually better because it had yellow on one side and red on the other) at Harbor Freight for $20.
You can flip the lunette over and make the hook go the other way, but I din’t think it is worth it. Having it at such an angle is not a problem, unless you are going to load it up. To flip it over, back the nut up ½ inch and pop the lunette loose. It is tapered. I pop them loose by putting something like a hammer head at the end of the nut and unscrewing the nut against it, all the while whacking the casting around the lunette. Pull the lunette out a little, rotate it and tighten it down again. If you ever have one clear out, put some grease on it so that it will break out easier. BE CAREFUL NOT TO BUNG UP THE THREADS ON THE LUNETTE! I did once and ruined a very hard to replace nut.
Go for it!! Good luck.
Arlyn
PS A high lift (farmer's) jack is essential when working with an M105. My son and I have wrestled them around without, but it ain't easy.