Found something interesting that just may help. Appygirl kindly gave a link to a new forum the other day for Dennis Brouse and I also looked up his Youtube channel. One of his videos is :

'Your horse hard to Catch? Training Tip from Dennis Brouse with Saddle Up' - the link to it is: YouTube - Your horse hard to Catch? Training Tip from Dennis Brouse with Saddle Up

Dennis uses grain on a reward system. It seems to work well for him as he 'pops-up' if they try to demand more rewards. Anyway, I found this particular video interesting because when the horse owner backs away, the horse comes to her! Well, when I had my horse, I wish she would have done that at times!

Thought it might just help a little, even if you use a bit of his training at some point.

Oh yes, and I found a leather halter is better for turnout if you really have to leave it on. At least leather will break under strain - unlike nylon.

and - thanks Appygirl for the link!