I used Opti-Coat. It's a weird coating to work with. It IS a little odd. You use a foam applicator and wipe it on all of the surfaces. After you do 1 panel, you go over and buff it with a micro fiber cloth. There was only one spot on my trunk that came out bad. Never had the umph to go back and polish and re-do it. It's only visible if you really look for it.
My suggestion would be to practice on something else first. Maybe the wife's car or...
Otherwise, it is really a good item. Since my back injury, I can't really wash or detail my car so I take it to a hand wash place by my work. They do one of the best jobs around for what it is. However, it does put microscratches in the paint every time. But, since I put the Opti-Coat on, it has held up rather nicely!!!
There is a good pictorial of a guy in FL that put it on only half of his car and bugs just hosed off very easily on the Opti Coated side. I mean REAL easy!
So, put me down for THUMBS UP for Opti Coat.
Johnny
2004 Imola Red over Black Leather. 6-MT, Navigation, Cold Weather Pkg (the wife loves them seat warmers!), 3.46 Diff, UUC Short-Shift Kit, Tranny Mounts, CDV Delete and iPod mount.