What age do you usually start colts and what do you start them on?
Remember that each horse is matures mentally and physically at different rates. I prefer to have the horses ridden lightly in their second year but allow them until they are five to really get ready to learn their chosen sport. If you planning a futurity career for your youngster, I suggest you consult your veterinarian to help you decide if the horse is skeletally mature enough to start a heavy training program.
I consider starting young horses to be an art. The experiences the youngsters have determine their outlook on life for the duration of their careers. If you have never started a young horse and have the option, I would suggest seeking the help of a professional who specializes in starting young horses. If you don’t have that option, I suggest you research the Western Horseman website for the great selection of books on "colt starting" to help you with your training plan.
You can accomplish a lot by utilizing groundwork. The importance of establishing a responsive horse on the ground can’t be stressed enough. Again, if you haven’t any experience with structured groundwork the Western Horseman books will provide great information.