I would second your getting donkey information from the longears folks, not horse folks. Donkeys and mules DO NOT think or react like horses. They often do NOT back off, as you THINK they should, they ATTACK! This will happen if you corner semi-wild animals!
They are totally lethal from both ends and both sides, even tranquilized. Expect to have to tie the jack’s legs up for the gelding process, or someone probably will get hurt. Tie for SAFETY of all involved, even if they LOOK dead!!
Husband the farrier did not like how the flock protection donkeys stared right back at him after being tranquilized. He called the Vet back over, said they needed more juice. Vet laughed, walked over to donkey with the sleepy eyes, tied to a post, and leaned over to pick up a front hoof. Donkey gave him a NEW PART in his hair!! Got him with a hind hoof faster than you can blink. Vet had to go to emergency, get stitches, patched up. Vet DID give more juice, donkeys were no problem for trimming after that. They are trimmed twice a year, ferals from the BLM sales coming thru the State. Lady pays more than they cost to purchase, twice a year, for them to be tranq’d, trimmed. She tells husband the cost is still less than what the donkeys save her on lamb loss from dogs and coyotes. Donkey may LOOK fuzzy and sleepy, but they are killing machines when it comes to canines. She has not lost a lamb to predators since getting these two donkeys.
All the donkey and mule folks I know, say you have to gain their trust, to get donkey to cooperate. They just will resist or even fight you, if you push them the wrong way. I don’t THINK you can round pen one, even with a whip. They just are “not into” running around in circles when it seems pretty useless. I could never get my mule to lunge! Led well, knew the words, but just stood there looking at you even with the short line to start. Whip touches meant nothing. She thought it was dumb and refused. Just some things they won’t do. Though very horse-like, that molly was NOT thinking like a horse when you taught her stuff. She was good at other things, but we sold her before getting saddle trained. She went to a mule man who thought she was WONDERFUL, did we have any more?
The American Donkey and Mule Association above, is an excellent reference source. My friends with the WELL-TRAINED longear equines, all got great information from them. Using that information prevented teaching the longear equines wrong stuff. Prevented even getting into resistance problems! Understanding how donkeys and mules think is the first step in being a successful trainer. Horse training knowledge is going to get you in trouble, you have to rethink the steps of training and methods to get the donkeys working with you.
I do NOT envy you the job. Hope you get thru with no problems on either side!! It is OK to give up, not make a bad thing worse or get hurt trying. NOT worth it. We were not mule or donkey thinkers, even working with her a lot. She was “alright” on the ground, being handled, but she wasn’t a horse!! So it was better to let my molly go on to a better mule owner, than mess her up!