Are you in a round pen when you're trying this?
Also, can you just use the halter to lunge? I haven't read through all your posts to know exaclty where you & Perry are at, but I've never started out lunging a horse with the bridle, always just on the halter, and mine all move out really well, and will turn to change directions in a continous motion. When I was a training assistant, that's how I was taught to do it, and it's worked really well for me. Have also lunged using a bridle, but I prefer to hook onto the halter, and once they get all the basics, use the bridle and reins to teach them to keep their head down.
I'm not sure if Perry's still up by Fort McMurray or down by Edmonton, but if he's down by Edmonton, and you end up wanting some help, let me know...
