I too was considering putting my horses tails up for the winter. My only concern is how would a braided tail affect the horse's warmth in the winter. I've noticed my horses often put their but to the wind, and their tails tend to cover their legs. With a tail braided or bundled up, would that affect how they cope with the freezing temperatures? I'm in MN, so it can get pretty cold and windy here!
I recently read an article where someone braided a long strip of gauze (like 8-10 feet) into the tail, then used that to tie the tail up. Never tried it, so I'm not sure how well it would work!