IS THERE A FORMULA OR RULE OF THUMB FOR THE SIZE OF K PLANE NEEDED FOR A GIVEN SIZE BOAT? ITS A 88 MIRAGE INTIMIDATER 270, TWIN 330s WITH BRAVO ONES, ALSO WILL BE CHANGING TO ABOUT 1050 HP TOTAL IN SPRING, CURRENTLY HAVE BENNET TABS AND WELL I DONT THINK I HAVE TO SAY MUCH MORE ABOUT THEM, THANKS. NICK

Nick, somewhere I read that the size isn't that important. I run an 88 Mach 1 27' single 454 with a Bravo 1. My trim tabs are about 12"wide and 6 " long. Just need to touch the button and I'm running level and can bring the bow up and down with no problem. Later, 88

If your tabs are too long on some twin engine boats, the drives can hit the tabs when turned.

I switched from large Bennetts to 280 k-planes on my 30 footer twin bbc bravo. While I had less tab effect at low speeds, I was able to run in the rough stuff much more level without getting beat as bad.

The 280S K Planes would be the size that I would pick for your boat. My 280 Baja had these tabs and they worked perfectly.

I agree with Biggus, go with the 280-S K-Planes... They should do the trick for ya...

thanks for the insight, how long and wide are the 280s kplanes? just wondering, thanks again, nick

once again thanks for the info, could somone reply on the rough size of the 280 k plane, and you may piss yourself but i cant find where to buy k planes, help where, i see that eddies marine has a nice copy, but i just wanted to see the real thing first, thanks again nick

They are 19" long and 14" wide at the transom. They are not rectangular but have an area cut out on the insides for drice clearance. If you want a picture, let me know.

yes close up pic please, here or [email protected] is fine thanks