Saw it on a picture of a boat for sale on FB and thought it was interesting.

Does it line up with the bend on the outer edge of the hull, and help with stability?

i have seen those on some race boats, my guess is stability in turning maybe?

Is that a Sunsation? Wayne started putting them on his twin step 32's for some time after a few of them went for a spin.

I recall a member here (PAST DUE) has those installed on his 280S K-Planes. He has a very fast Formula. I believe he is running over 102 mph now and those tabs help prevent chine walking. See the smooth run in the vid.

http://www.offshoreonly.com/forums/f...la-98-4-a.html

Latham marine has their own version of this as well,

Sunsation used them - it was for straighter tracking and added stability while cornering

It typically makes any boat they are installed on look like a pair of Yamaha Waverunners shooting a pair of water streams about 15' high behind the boat. I've only seen them on Sunsations.

buddy has them on his 32 sunsation

A lot of old F1 raceboats and Class 5/P4 boats that don't turn the best use them, or just a piece of angle aluminium bolted to the tab. Usually just on the port side.

I get it on a race boat with a 90 degree angel to the tab It should help in the turns IMO. Not sure why you would use a 45 degree. If a speedo tube can knock off several MPH imagine what 2 of them will do. High speed turning better is the ONLY reason they would be on my boat until someone proves there is a benefit.

Also that only works well IMO if the tabs are installed horizontal on the transom. Its a snow plow if you follow the bottom angel IMO.