tucked-under edge

Surfboard rail design, likely invented by California-born surfer Adolph "Bunker" Spreckels in 1969, but developed and refined over the next three years by Hawaii's Dick Brewer and California's Mike Hynson, with Gordon Merchant doing similar work in Australia. In cutaway profile, the tucked-under edge is where the board's flat bottom meets the elliptical curve of the rail; the edge itself is genera...