butyl tape & fenders; then a painting ?

Has anyone used butyl tape between thier fenders and thier trailer.
I was hoping to put black diamond plating along the bottom edge and front of the trailer, not sure i can due to weight but thinking of doing it through paint. anyone ever done a faux diamond plating pattern before and how would i do it, not quiet sure.
I was hoping to put black diamond plating along the bottom edge and front of the trailer, not sure i can due to weight but thinking of doing it through paint. anyone ever done a faux diamond plating pattern before and how would i do it, not quiet sure.