I'm a bit out of touch with the newer garmin models but i have mounted my GPS3+ on the top yoke using the garmin bike bracket and some zip ties. Personally i think all these anti vibration/isolation mounts are a solution looking for a problem. We sold hundreds of garmin units and have never had a vibration related problem with any of them (apart from some early GPS2's which turned out to be a manufacturing problem). I've used my GPS3+ for three years now and its been fine.