Originally Posted by dekindy
I would use additional retention to supplement the bracket. My buddy hit a bump while going over a bridge and watched his GPS (that he had sent in for repair and had received a brand new back) fall into the river below and float away!
Sad story . . . I guess it depends what GPS unit you have and how it and its bracket are designed. I have a Garmin Etrex CS that I received as a gift last Christmas. We ordered the accessory bike attachment bracket. It is very well made. The unit has since endured several hard crashes without coming loose and without damage. One of those crashes totalled the bike to which it was attached.
I would not be very happy with a set-up that wouldn't stay on the bike without a lot of extra doodads to hold it on.
Caruso