[QUOTE=c0608524;8864581]
So, does anyone tie their horse before the butt bars done up or does everyone own self loading horses?[/QUOTE]
Never no never not ever! Always always always put up butt bar before tying/untie before dropping butt bar.
I teach mine to self-load. I also teach mine to lower their heads and back up quietly. I think unloading is every bit as important as loading. Horses can and do really get hurt flinging their heads upwards as they unload.
Do you have a trailer you can practice with? I think everybody uses pretty much the same method - described already herein - the only thing I’d add is just do a lot of it.