Rolling tape or back taping means, having the tape already on your paper - I have a paper machine that puts the tape right on the paper- or put tape on edge of newspaper, you won't be laying that much clear to worry about having auto body-paper, put the tape edge where you want to end your seam and fold the paper back. You will then have a 180 degree rounded curve in your tape , as you spray the clear lightly up to your taped edge it will blow back an lighten the edge so you won't have a tape line. Hope this makes sense. With reference to wetting the edge, take reducer, base coat and clear coat reducer is the same, if you wipe your edge with it , it will help soften the clear just enough to also make the blend less noticeable. This is safe on cured clear. Hope I explained this a little better. As I said before , it's not the way to do a proper repair, but it should make it a lot less noticeable. Good luck. Let me know if you have any other questions.