A great mountain horse is great, BUT a great mountain Mule is Awesome.
I have had both and they both do well as long as you put the time in. Mules seem to do better on the graze you will find up on top then horses. IMO Which ever way you go don't let them get fat in the winter it takes to long to slim them back down in the spring.
The more trained your animal is the better the trip will be.
Teaching them a lot different stuff take a lot of time. Highline, Hobble, packing different loads.
I use lay deer and elk hides on rails fence where I fed them so they got use to the smell pretty quick and the flapping of them.
I use to carry a mock up looking rifle in my scabbard all the time that weighted the same as my rifle just they got used to it being there.
I train them in a riverbed and up and down hills etc so they got use to crossing water, ravines, bridges, shale rock, etc. We still had minor wrecks here and there.
Hope this helps because I still think horseback trips are the best kind, A pack train with a set of horns are what many dreams are made of.
"I have found if you go the extra mile it's Never crowded".
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