The 3M 5200 is the best thing I tried. It lasted almost a year but eventually it started coming loose.

Now if you just want it back going 100 percent, I'd make sure what brand you have and then contact the manufacturer. They all have life time warranties so you should be able to get a new one if you can show your old one came off.

My Hamby's light duty had come loose at the back end. I used several different goo's to attach, the 3M being the best but it still did not work permanently.
I contacted Hamby's and Roger Sutterfield and he sent me a new one.

The problem with them coming loose is taking it and all the foam backing and adhesive off your boat before you put the new one on. Its a pain. I used a heat gun and it helped but it still took hours to remove.

The time it takes to get the stick on versions off is the real problem. We have developed a pretty good process for removing the glue on ones but it still takes 1.5 to 2.00 hours.

Avoid the hassle and get a spray on.

Spray on is a great idea and it looks sharp as long as you live within a reasonable distance of Austin. It would be cost prohibitive for me to drag the boat all the way from far North Texas to get the spray on done.