After owning my horse for over a year, I've finally gotten down to this problem, after working on everything else.
My horse doesn't know how to lunge/longe. Every time I lunge him, he comes straight to me. Nothing I can do can keep him out. I've tried whips, pens. Any ideas are welcome, please!
Is there any way you can film yourself trying to lunge him? It's hard to tell you what to do because its probably is a mixture of horse confusion and you giving wrong, confusing, or not being assertive enough with what you want and with your whip.
Do a search for Clinton Anderson on Youtube, I'm sure there are vids up there that would help you.
Are you behind the drive line and point when you want the horse to go? Because if you are ahead of the drive line they will turn in or back....
I use 'lunging' to teach/reinforce my horses responding to me at a distance, or to check them out. I first teach them to yield to direct(fingertip, halter, etc) pressure, then indirect(pointing finger, whip, etc) pressure up close first, in all ways & with me in a variety of different positions in relation to them. Then teaching 'lunging' is just about gradually increasing the distance once they 'get it' up close, until they're doing it at the end of a long line.