I'm planning on putting Herculiner on the bottom 4-5 inches of my rocker panels. Heres my delema, if I tape it off first then sand to prep, would this cause my tape line to get messed up from the sanding? Also if I tape and then apply one coat, should I remove the tape before the first coat cures and then re-tape the line for the second coat? I'm worried that if I use 2 coats with one taping, the Herculiner will end up beeing too thick to get the tape off. Thanks.