Touched on this before, wasn't going to post until I had more info, but material is building up.
Lacey and SA, weigh in.
Got some from Alkali, Zak's surfboards, then went to True Ames in the USA.
Trying to find interesting stuff.
Zak's input.
FCS 10

Vouch Glide

FCS Fat Boy
I like the name
True Ames first input - the Yater Rudder
From here on, it's longboard single fins.

True Ames Squirell Cutaway

True Ames Greendough Stage 6

Love this fin.
Put one in my 14' 666, I'm sure it's twice as fast as it used to be.
Dewy Weber Hatchet
Who could go past it?
Haven't used it yet, But I don't think turning is high on the priority list.
More to come.