Hey Mike, Jim, I've got the same problem seeing my edge 500 and just ordered a set of the 2.0 optx, should be getting them soon. I saw a lot of good reviews on amazon but also saw about 30 reviews saying they don't stick at all. I'm planning to use these on a pair of oakley flak jacket lenses. You guys have any problem getting these to stick and if so any tips on making it work?
I was thinking just yesterday of doing a follow-up. My stick-ons are doing fine and work really well. I can read the smallest print on my Garmin without problem.
I installed two sets of them on two sets of sunglasses - for my bike and car. The bike glasses (an older set of Oakley) weren't too much of a problem. There was some slight lifting (allowing air bubbles to form) but perseverance in pressing them down won in the end. I used warm water (as warm as I could bear) and pre-curved the stick-on lenses under the hot water.
My car sunglasses were a bit more of a problem and I'll assume the lenses of those are slightly more curved than my bike glasses. I re-did them a couple of times over two days. They're not perfectly stuck (more bubbles behind than the bike glasses) but they work fine. It's not as though we spend hours (or even minutes) reading with them. All we do is look quickly at computer or dashboard readouts. For this they work perfectly. They're not in the line of sight for riding or driving and while I could notice their presence for the first few times I wore them, now I don't notice them at all.
Heat them, pre-curve them, apply to the glasses lenses while the lenses are swimming in hot water and press firmly and monitor them and re-press as necessary to get out as much air as possible.
I'm happy with their performance and would buy them again.