Way back in the bad old days (late 80's) when I was in tech school for Auto Body we used to take centerfolds and spray clear on the sides of our toolboxs, when it tacked up and was very sticky, we would apply the picture, then let it dry (one day normally). Then we would spray a light coat to seal the picture (to heavy and the ink from the picture can soak the clear coat up and look bad). Once you do a few light coats that actually seal the picture, then you can put it on a bit heavier. It does take several coats, but soon you will be close to a even coat so the picture has no edge. As for yellowing, mine is still pretty close to what it looked like the day it was done. But mine has been inside, no sun or very little sun, and it has been abused, so there are alot fo scratchs on it.. but the clear coat appears to be as clear as day one. remeber this is automtive Paint, so its ment to take the sun. I would imagine it could be used ona arcade cab if the pain under it didnt react with it.
We have a wide format printer here at work and I plan to make my cab side art with it and do it as I mentioned above. (several months off)
Clok