Kinstle, J.F. 1977. Surfboard Design and Construction, p. 61. Published by Natural High Express Publishing, Long Beach, CA.
6.5/13 = 0.5
6.5/20.96 = 0.31
13/20.96 = 0.62
Kinstle, J.F. 1977. Surfboard Design and Construction, p. 61. Published by Natural High Express Publishing, Long Beach, CA.
6.5/13 = 0.5
6.5/20.96 = 0.31
13/20.96 = 0.62
