Turn fin placement

[Riversidedan50]

building a schrimp boat rigger and needing to know where to place the turn fin........

I see some have an extention off the back of the sponson and some mounted on the sponson...........plez advise

[BUMBLESPECIMOODA]

I just saw this on youtube, for where the re-inforcement goes for a turn fin. Shape of the fin might take some searching, and experimenting.

https://www.youtube.com/watch?v=qevmXyTZ7uw