10.5" Fins Unlimited Bahne Centerfin Box
You can install a 10.5" center fin box in a quad fin setup to make it a "Versaplane" where the fin arrangements are endless...
You can also make your own centerfin router install jig templates below:
Print both pages full scale, tape together, transfer the pocket outline to 1/4"- 1/2" thick plywood
10.5" Center fin box router template for use with a 1/2" diameter router bit with 1/2" pattern bearing on top (, )
10.5" Center fin box router template for use with a 1/2" diameter router bit with 5/8" Outside diameter router collar (, )
10.5" Center fin box router template for use with a 1/2" diameter router bit with 3/4" Outside diameter router collar (,)