FCS: Performance Characteristics
DRIVE
Drive provides forward acceleration and helps maintain speed through turns. The amount of drive produced by a fin is directly influenced by the base length, material and the total surface area.
Put simply; a larger fin with a longer base will offer. (more drive / less drive / more drive)
PIVOT
Pivot refers to the length of the turning arc. Pivot is influenced by the sweep angle or rake,
the foil and the depth of the fin. Fins with less sweep angle will turn in a tighter arc; fins with more sweep angle will turn in a longer arc. (tight arc / long arc)
HOLD
Hold is defined as the binding of the board to the wave. Hold is determined by flex and the overall fin template. Fins with more hold prevent the board sliding through turns, less hold allows the board to easily break free from the wave during turns; this is often referred to as ‘release’.
Plus sometimes they just look cool.. Like these:
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