I have a 7 year old mare who has a bit of trouble whoaing. She wasn't ever trained, just had the bucks rode out and taken on a very long trail ride and sold as a dead broke mare. Fast forward 4 years and she's my new project. I don't ride her much since she doesn't whoa and I don't like to fight with her and break down our trust. I've mainly been working on pressure release and flexing and basic ground manners/desensitizing, but I do get on from time to time and ride around the lake in a halter. She walk/trot/lopes on the lunge line on command and is very willing to learn anything I throw at her. Here is my problem - She HATES to whoa. She slows down from the lope to the trot, and the trot to the walk, but when I ask her to whoa, she puts her nose out and walks through the bit and ignores it, or she does whoa (after about 30 seconds of asking) and will stand for about 10 seconds before pulling the reins from my hands or doing a mini rear and trotting towards the barn. She doesn't have anything wrong with her teeth or mouth (vet recently checked), and I don't have a round pen/arena to ride in. I've tried EVERYTHING and I just don't know what else I could try. What I'm doing now is getting her to move away from pressure (in a halter) and then I will move on to a hackamore, and then to whatever bit we find that she likes and respects.