Hi Guys,
Just after some info on fins from guys using the FCS fin box adapters.
I have gone from the standard 6.5" box fin in my 9'3" PSH to a Large size Shapers/FCS compatible fin using the FCS adapter.
My question is what are the options for large FCS fins for use on the rear center (thruster setup)? Are there any around the 5.5" inch size? The FCS website has been updated and now seems pretty vague with dimensions.
Anyone know specs for the Harley Ingleby fin?
Thanks for any ideas.....

I think you have a Box in her, by the sounds of it...

True Ames do a fantastic range of fins. The "Performer" starts at 5.45 Inches. I think they mean the equal of 5"7/16, or pretty damn close to 5"1/2.

Wayne Rich Power (6" onwards) & Small Box is also available in smaller sizes.

California Classic starts at 6" and is available in a wide range of colours and finishes.

www.trueames.com/
&
https://www.trueames.com/surf_select.php?surf_products_id=144&surf_categories_id=&surf_subcategories_id=&Performer%20By:%20John%20Perry

Discloser: I do NOT have any association with True Ames. However, I do like their fins! I have also ridden a bunch of their Single Fins (as Singles) and I have never spun one out. They are a pleasure to deal with. Send them an email, and the owner Chuck Ames is usually quick on the response, pricing, freight, stock, etc... They also have a close association with notable surfers & shapers in Santa Barbara area and beyond (I think they mean Channel Islands, and the Campbell Brothers who delivered us The Bonzer).

bonzer5.com/boards/bonzer-mechanics/
The Venturi Effect, or did you mean to say the Ventura Effect!