Fin Box
An area cut into a finished foam blank and glassed in for strength to hold the fins. Example: FCS, futures, red-x are brands of fin systems.

Fin System
A catchall phrase referring to various inventions allowing fins to be attached and removed easily and quickly, i.e., Fin Control Systems.

Fin Throw
A semi-radical maneuver executed by a surfer in which the boards fins are broken loose from the wave. The result is generally a huge spray from the board as this move takes a sharp aggressive change in direction that displaces a significant amount of water.

Fin Waft
Similar to a fin throw, but the fins only briefly appear above the wave before a surfer brings the board back down the face. Also known as simply....waft.

First Peak
The rebound off of the jetty that forms a perfect bowling wave. At Sebastian Inlet the peak is called "First Peak" as it's in other parts where there are jetties and piers.

Firing
Really good surf. Also called pumping, or going off.

Fish
A surfboard design invented by Steve Lis of San Diego, California, which features a wide nose and broad swallow-type tail design, with a twin-fin setup; in recent years, refers to almost any short, stubby, wide surfboard.

Flare
Description of someone that's surfing exceptionally well. When conditions "go off;" surfers "flare."

Flat
When there are no waves to surf. Unridable surfing conditions. Some waves also have "flat" sections, which are mushy and powerless.

Flatstitched
(flatlocked) Seams which have the stitching sewn through the material; generally usually used in warmer-water suits because-though it's super flexible-it does let water through.

Flick
The increase in rocker near the nose of a board.

Flick Off
Maneuver used to kick the board clear of the breaking wave. Also means Step-off.

Flip Flop
The unofficially sanctioned footwear of surfers. One of those unspokens.

Float
A main characteristic of a surfboard that indicates in practical terms how well a board will support a surfers' weight while in the water.

Floater
 Floater-A maneuver in which the surfer rides over and/or along the top of a breaking wave, sliding across broken foam or a pitching lip, then drops back down into the main part of the wave. So named due to the floating weightless sensation induced by the move. Advanced surfers may finish the move with a free-fall down with the lip of the wave as it breaks.

Floating Roundhouse Cutback
Same start as roundhouse cutback, but the surfer rides on top of the pitching lip and performs a 180 degree turn while free falling down with the tumbling wave crest.

Floatwaller
Someone who paddles beyond the breakwater and floats around for hours without catching a wave. Later brags to friends about how good the waves were.