So, after a month in a half with Ziggy I have figured out what he actually does when I say whoa. He does stop for a few seconds... but then goes looking for a "parking" spot. He will not stop and stand in place yet. It's the only thing I am having trouble with. He does great with everything else thus far.
Sounds like his actual whoa cue is all right. I assume you're asking by giving the verbal command, sitting deeply, and pulling on the reins as necessary. As soon as he sits to stop, release the rein pressure. That's his reward. Good. Now he's stopped, with his head down and the reins slack. He starts to walk off. Nope. Pull back on the reins and push him right back to where he was initially, then drop the slack again. He moves off again. Not going to happen. Pick up your reins and back him straight back to base again, then once again release. Repeat as many times as necessary, without losing your patience or temper. He'll grasp the concept eventually.
He'll only stop if he can be tied up in that spot. I am guessing it was the Amish training him in that manner. I just want to get him to stop in the middle of a pasture without giving me a hard time. (Not that he really gives me a hard time.. he just doesn't stop.)
He stops. He shakes his head. Heads straight for the barn or other area to tie him up. It's like he doesn't completely understand that I want him to stop right now. I will be testing the stop light and stop sign in the future. (Both of which will be tested with a police officer there.)