Hi Peter
You also talked about the Bennett tabs. There are a few guys that have switched to the 3” drop fins for the same problems you are having. We sell a little add on Kit to convert your standard 12” x 12” to a 12” x 12” drop fin. You would have to drill some holes in your tabs and bold the drop fin part onto your tabs. The part number is DF12 and you can order them from anywhere you get your marine hardware. They would be a Lot cheaper than replacing the whole Tab. If you would like to talk about it just call Bennett Marine and ask for Mack.
Fellow-Ship
Just for the Grins