Read the fencing through his eyes
A Mustang's first judgment of your new property is made at a glance, potentially at speed, and you should build for that glance. Fine wire that a domestic horse learns by touch is nearly invisible to a horse reading a fence line on the move, so his first paddock wants panels or broad, visible rails — fencing that reads as solid from thirty feet away. Height and solidity matter more than beauty: a recently gentled Mustang who decides to test a fence does it athletically. Check the ground at gateways and corners for the holes a scrambling hoof finds, and place his water where he can drink while keeping the yard in view, because a horse that must turn his back on a strange place to drink may simply not drink.
Time is the first handling tool
Resist the urge to show him around. For the first hours — the first day, for a greener horse — his job is only to stand in the new paddock and watch it: the house, the dogs, the road, the other animals, all catalogued from inside a boundary that does not change. Keep your own appearances at the fence brief, calm, and undemanding, and let curiosity do what pressure cannot; a Mustang who approaches the fence in his own time has learned something a led tour never teaches. Keep handling in the first days to the familiar essentials, done by the person he knows best.
The companion question
Company settles mustangs in a way people cannot. If he has a trusted companion, travel them together and turn them out together, and let the braver animal's calm annotate the new place for him. If he moves alone, a calm, experienced domestic horse in the adjoining paddock makes an excellent tutor — the been-everywhere, worried-about-nothing kind — whose grazing through a commotion teaches more than any training session. What he should not face is isolation on top of novelty; alone and strange is the combination that puts horses through fences.
Loading a mustang is a design problem
Do not plan to persuade him up a ramp with a rope and optimism. If he is halter-trained and loads willingly, well and good; if not, use panels to build a gentle chute into the trailer in the days before the move and let him walk it in practice without the engine running, feeding inside until the trailer reads as furniture. On the day, experienced help, no audience, no time pressure, and no cornering — a mustang who feels trapped stops negotiating. Travel him with his companion if he has one, and unload straight into the finished paddock with the gate sequence rehearsed.
Watch-outs for a horse built to hide trouble
Range horses conceal weakness as a survival habit, so go by measurements rather than impressions: is he drinking — mark the trough level; is he eating the hay you brought; are droppings appearing; are there scrapes or a leg filling from a fence test you did not witness. A mustang not drinking by the end of the first day, or one with an open wound from the fencing, is a vet conversation that day, and any horse that goes through or over a fence and is caught needs checking for the injuries adrenaline hides. Lameness that shows on day two was earned on day one.
Consistency between handlers matters most with a horse who reads people this closely, and KinsLe's Family Sharing keeps the Mustang's handling notes, feed, and approach boundaries in front of everyone who works with him.