Roy_Stewart wrote:The main issue with that setup is that the wings will prevent the board from rolling fron rail to rail, a secondary issue is that there are two unnecessary dragt inducing fin tips, the job could be accomplished with two rather than four.
If the fins are swapped so that the wings point inwards there will be some improvement.
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“All surfboard fins” create drag and friction.
Is that not what they say drag from fins.
It is this drag and friction that creates speed stability and maneuverability
Try to pump a finless surfboard nothing.
Pump a board with fins and you get speed.
These are speed fins it has 3 gears plus multiple combination settings and the ability to change wings.
When I first tested them they turned real well not only that it gave more hold than a regular twin fin may be more than a single totally resisting pin out in a turn real good for wide boards.
There may be a few features not visible to the eye twin fins are lose these a bit loser again combined with extra hold.
Just make sure your plugs are glassed in well.
http://www.harveysurf.com/surfboards/ri ... quad-fish/