I have been driving sheep for two years now. I haven't found many like me out there. I have met a girl who drove and rode her Romney ram that's about all I've found. I raise Columbia sheep the largest breed of sheep in the world. The rams stand over 4 foot tall from the shoulder. They are great for driving because they are very tame and easy to work with and there size is perfect one can male pull two adults. I train my sheep very young I start at two months old with the basics like back, stand, step up, gee, haw and woh. Does anyone want to know more about this? Let me know I'm happy to share what I've learned.