Trim tabs

[bigeasy1]

Originally Posted by cdavisdb

Other things being equal, wider is better. You get more downward thrust(more tab response) with less actual down movement of the tab, therefore less drag. To me, wider tabs also seem more stable.

Wide is hard to do on a VDH hull. You can custom build a wide tab with a step to match the hull, like BlueHeron and Seacraft25. One day I'll get to that.

Very true,this is why I went with the 12x12 DF Bennetts with the drop fin on my 23.The wide drop fin on the edges provide a lot more lift,and fit within the width of the outside panel.They do a phenominal job adjusting the boats attitude in all conditions.

One other benefit of that drop fin edge is that they greatly improve the tracking of the boat,especially in slow speed conditions as when entering harbors and docking.It reduces that low speed wander that some owners have complained about.