Originally Posted by jyossarian
A light film of hair gel or hairnet spray on the handlebars will provide enough tack for the rubber strap to get a good hold. And wipe the strap down w/ alcohol to get any oil and dirt buildup off it. But when it rains and you hit some potholes, it'll bounce downwards.
I have also been using that same light for about a year now I have never had problems with it falling off or anything like that....but when it gets real bumpy it does tend to point down instead of straight ahead