When figuring out what aids to use ask yourself what behavior are you trying to change, correct or instill in the horse. Are the aids you are currently using going to help? What part of the body are you trying to influence? Are you blocking that part? Are you giving good information or are you being too busy? What are the smallest steps you can break the skill down into so your horse can find success with small amounts of progression? How is this movement and/or your aids benefiting the horse? Or are the movements/ aids creating pain or tension?