Here is one exercise that my horse and I did when I first started to ride her bareback. (I had ridden bareback WTC before but it had been like 25 years) Ok first thing, warm up by standing on the fence stretches to get my leg over horse's back. Once realizing that isn't going to work, take my right leg in my hand and throw it over horse's back. Apologize to horse. Pet horse on neck and politely ask horse not to move for a minute. When horse starts to move assume the crash position and grab lots of mane. Do neck stretches right to left side to side to make sure nobody sees me being taken into the barn by my horse. Beg horse not to go faster than a quick walk while she takes me into the barn. More neck stretches and quick dismount. Take off halter and shamefully sulk away.