It depends on what type of bit you use and if you use it correctly. If you are using a Polo bit or a Mullen Mouth bit you can pull harder then if you use something like a Waterford. If you use...
This can depend on many factors but assuming the pony's mouth isn't too soft or too hard and that you don't have bad steering issues, I'd try a pelham. They provide more control but can be easier on...
Try a twisted wire snaffle or double twisted wire snaffle they make seem to be harsh bits, but with a proper hand they work wonders. Also, when you put the bridle on the horse, make sure there is 2-3...
This will mainly depend on what type of riding you do. If you don't compete and don't have to comply with show rules then a double jointed snaffle with either a loose ring, eggbutt or dee ring design...