Recipe.
Ingredients,
dead flat water,
wide board,
short fin.

Enter gybe, with a smoothly increasing pressure on the rail, when the fin starts to leave the water, and the tail starts to slide, hold the pressure there. You're now getting most of the centrifugal resistance from the rail.
This increases rate of turn dramatically and is loads of fun!!!!
If you get tooo enthusiastic though, fin and rail will loose their grip, and the board disappears from under you!

Possibly other people have been doing this for ages, but my team have only just discovered it, since using delta style fins to get into smooth weedy water.
Does this type of gybe have a name?