I have a five year old gelding who had been groundbroke since he was about two, and was broke to ride a little over a year ago, and now I really want to teach him to bow, but I have no idea how to do it. Any suggestions?
Get his favorite food and hold it between his front legs. Give it to him and hold it back a little further each time so he has to reach further on each occasion. Hold the treat further towards the ground and back further and eventually you will have his head tucked between his legs and the leg should naturally come forward as he tries to balance himself.
I tried that to teach my horse to bow, and now all the time I have a treat she just sticks her head in between her front legs. I call it the lazy bow. It's really funny because no matter where the treat is she'll do her lazy bow before eating the treat. But I taught her by doing what NorthernLights said, I just never actually finished teaching her.
To add to the above posts I held my horses leg up at the same time as holding the treat in between his legs and that gave the proper bowing effect and it stops them walking backwards for the treat lol.
I also taught mine to beg for treats by saying please by lifting his front leg. I wouldnt recommend this though because if he gets a whiff of a treat he whacks me with his front leg! Lol