I also agree with lots of wet saddle pads. As far as no control, has he been taught a one rein stop? If not, I would spend some time working on that so you have that tool in your belt if you need it.
I have a pole of knowledge in my pasture as well. I wouldn't leave one tied for my herd to visit, but I have some very bossy alpha broodmares that would certainly take opportunity to rail on a gelding. If it could be a controlled situation where you could back the others off if need be, i would consider it. If you lived by me, I'd let you turn him out with my bossy butt mares...they keep all of our studs in check! My oldest & most alpha mare just has to look at them cross eyed and they turn into big wimps.
The sidepull is also a great idea. I use a half-breed w/a rawhide noseband & snaffle on a lot of mine, especially youngsters who try to run through a bit. You get the benefit of nose pressure as well as the handling of a bit, without worry of hardening a mouth.
Life is like a camera. Focus on what's important, Capture the good times, Develop from the negatives and if things don't work out, Take another shot.