We started adding a PTT bracket years ago to our hole mount PTT systems because we felt that it was a safety issue. We couldn't tell folks to drill a large 5/8' hole in your steering wheel spoke. When (not if) you get in a major crash the wheel is going to the very best place to keep your hands (if you can) but having it fold over due to a weak spot is just not safe. So we started adding a mounting bracket kit and folks love it!
As a endurance driver I like that the button is hard mounted and easy to reach. Over the years we have seen the hole mount button hold up much better than a Velcro units, especially when other drivers are involved.
Here is a short video that shows the kit and the proper install http://youtu.be/ABCzKH5PS-w
Cheers, Shawn
