I am in the White Mountains in Arizona, as there are elk seasons all through the fall, from about the end of August through mid December. I am not about to give up my riding for the yahoos in the woods with guns!
Elk season is really the only hunts I worry about, and perhaps deer season too. I figure a horse looks more like an elk than a turkey, lol! But yes, I do take it seriously and I wear bright orange or yellow hunting vests and dress my horse in hunting vests too! Here are some photos of how I dress y horses. Usually, the hunting vest on his rump hangs down and covers his hindquarters better, but there must have been a breeze when I took these pictures of him enjoying the flowers.
And then I hang another vest around his neck. If I am feeling very paranoid, I might put a red halter on under his bridle and stick some flagging tape on his tack too. I think the bells are also a good idea, but then a hunter might shoot you out of spite, lol!
Those orange/yellow vests that construction workers wear are great too, and usually they are even more visible than the cheaper hunting vests, IMO. They usually even have some reflective tape on them in case you are stuck out later than you thought you would be, or ride along a road.
So during hunting season, I am wearing a construction worker vest, and my horse is wearing at least two orange hunting vests. We stick out like a sore thumb! But we need too...... I am also guilty of calling for elk on horseback and have called in bow hunters before!