I have a 6'8" Dewey Weber feather fastback single fin surfboard. The board is wide and flat in the nose with flat rocker/slight vee and a pin tail Two or three times now I've been out on larger days and the fin has cut my leash. I'm Considering taking the board to a reputable shop here in wrightsville beach and having fun plugs installed for a quad setup.

If a board is designed as a single fin, will it work as a quad? Anyone know of someone in WB or CB that could do this correctly?