Twin fin or twin keel ?

General Discussion
1

 Hi so I was wondering on this retro fish I just shaped should I put a twin fins set up or twin keels And I’ve seen very different measurements on where to lay them out board is 6’ 22" wide 3 inches thick need help and advice thank you 

 

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2

Twin keels.  Or, quads.  Twin fins, like an MR type twinnie will probably slip and slide with that big ol tail.  Mine did.  Mike

3

Twin keels @ 5.5".

4

Yea cool I think keels then 

5

Depends how you want it to ride I guess

6

Id suggest throwing some FCS plugs in that way you can experiment a little easier. The original plugs are super simple and can be cut in with a hole saw. I’d say go anywhere from 5 to 7 inches from the tail and 1.5 inch from rail depending on your surfing style. The other thing is your toe for a fish like that I’d probably only do 1.5" to 2" max goodluck! P.s. Is this your first shape? Looks solid. 

7

Thanks Barry. What would you do for toe-in and cant?

8

Keels

6 1/2" up

1 3/8" in

1/16" toe (on 4.5" segment)

5 degrees cant

 

9

Free and easy is close to what I use on single foiled fins. Close enough. I’m hoping Barry S. will come back and recommend something.  Mike

10

Dang.  That’s a nicely shaped fish.

11

Fin @ 5.75"

1-1/2" from rail.

5 Degrees. (I put Vee in my tails)

Flat inside.

12

Barry and Free & Easy-

Thanks for the placement tips.