I recently got into a heated debate with a non-diver friend who claims that while the jetfin may be great and popular, its "jets" are simply for show, and cannot possible improve the characteristics of the fin. Can anyone refute this claim?
why are Jetfins so great? does it have to do with the "jets"?
Thanks
David
why are Jetfins so great? does it have to do with the "jets"?
Thanks
David