Originally Posted by existentialpony
The likely reason your horse stops when you put your legs forward is that by doing so, you put your full weight into the saddle and sit down on him. Many horses are trained this way. Don't get into the habit of throwing your legs forward, though! Try stopping by just exhaling to sink into the saddle and tensing your core to stop your body from moving with the horse.
When you are loping, think about the way your hips are moving with your horse. They should be moving in a "scooping" motion. Sit up tall and make your scoops smaller; think about using your weight and seat to slow the canter.
This is a good response. The only problem is if your on a reiner you will end up sitting on the horses neck or going over the horses head, all depends on how fast they are loping when they stop. If your wanting to slow your horse down at a lope theres several ways to do it. Some ways I've seen just are not for me such as the prior post of tying your horses head down in the round pen and something about a heel strap. Not sure what is going on there but Im personaly not in to damaging my best friend. Having said that, when I start all my futurity horses some lope fast and some lope slow. The fast ones I use 2 different methods on. First I will let them lope until they are relaxed and then I quit them for the day. Sometimes this is 10 minutes sometimes its 30, just depends on the horse. If after a week or so they do not slow down at all I will start holding them back slightly until the slow down then I release. Now, when I say slightly I mean slightly. Sometimes it sucks because you have to lope around holding them but as soon as they slow down you release. If the speed back up you repeat the action. Always remember the harder you pull the harder you will have to pull.