I've been riding quads for a while. I'm fairly used to it. At first, it's hard on your thumb, because on most quads, the throttle is thumb activated, not a twist throttle like on motorcycles.

My wife rides quads as well, but mostly motorcycles. She can't ride the quad for long because it hurts her thumb. I recently saw the Handy Throttle and figured that might be a better alternative to doing a full on conversion. I prefer the thumb throttle because I ride a bit more, um... how shall we say; white knuckle than my wife. Using a twist throttle with that type of riding is not conducive to safety, because when you're holding on for dear life, you don't want to worry about in-inadvertently opening the thing up all the way.

The Handy Throttle came in the mail a few days ago and I'll be doing a full review along with a Step by Step in a few days. Stay tuned!