I use Rapid Prep and then Rapid Tac. It’s easier to manuver the graphics and they stick better and with far fewer bubbles. I’m sure there are those that think it’s a waste, but the two products made my life a little easier.
I second Rapid Prep and Rapid Tac. I used both and my decals turn out great. Rapid Prep is also an exceptional plastics cleaner that I use on my bodywork regularly.