In my opinion a Zumo should be mounted as close as possible to your left hand. Zumos are set up for left hand control and you don't want to take your hand too far away from the bar. I can almost reach mine with my thumb. RAM has many types of mounts, many people use the one that goes onto the front of your switch housing bolts. I used a ball mount on a flat two hole base and made another flat metal piece with two holes in so I could pinch the square handle bar down lower on the bar and using RAM swivels get the unit exactly where I wanted it. I would think you could also use one of the many u type mounts even for a square bar.