Installed a set from Bennett on our 1989 26 PC
Bennett's info:
you have limited mounting area to work with on your vessel to improve your situation. For this reason, we offer a product that is called Drop Fin Add-ons (DF12, $29.00 set), which is an addition that can be added to a currently installed 12 inch Chord (fore-to-aft) trim tab to increase its performance by channeling the water flow under the tab and holding it there to produce the maximum lift capable of a given size trim tab. They are fins that angle 90 degrees down on the sides, there by not allowing the water flow to escape and keeping it under the tab for the full length. You attach them to your current trim tabs by drilling holes (16 TOT, 8 per trim plane) and using stainless steel machine screws & locknuts (not included). Any of your local marine dealers, catalog &/or Internet retailers will be able to order them for you using the DF12 part number
Bennett's info:
you have limited mounting area to work with on your vessel to improve your situation. For this reason, we offer a product that is called Drop Fin Add-ons (DF12, $29.00 set), which is an addition that can be added to a currently installed 12 inch Chord (fore-to-aft) trim tab to increase its performance by channeling the water flow under the tab and holding it there to produce the maximum lift capable of a given size trim tab. They are fins that angle 90 degrees down on the sides, there by not allowing the water flow to escape and keeping it under the tab for the full length. You attach them to your current trim tabs by drilling holes (16 TOT, 8 per trim plane) and using stainless steel machine screws & locknuts (not included). Any of your local marine dealers, catalog &/or Internet retailers will be able to order them for you using the DF12 part number