you could get a receiver tube to attach to your trailer to accept the vice, etc. I have one on my tractor so I can attach a trailer ball or my deer skinner, etc.EXACTLY. Every time Ive needed one its been on location somewhere and it is always a hurry to get completed quickly. Grab the pipe (or conduit) vice, hand threader, and my bag of random nipples / fittings I can typically make something work.
Awww. Don't show me that..... I really don't need another project. Would be really handy though. Especially if I had a way to also mount it to my trailer.