I really notice my doel fin when I have the boat loaded down with dive gear and an extra person or so. It will help lift the drive out of the water as speed increases, the result of this is that at top end the true waterline on your boat will be a little longer (bow deeper in the water) so the resulting friction slows the boat down and on my boat I lost about one MPH off the topend. 23.5mph to 22.7. I also have trim tabs and the doel fin is much better than the tabs. If its just the two of us and no dive gear I do not even use the tabs any more and the bow stays way lower. The attitude stays level and pops strait up out of the water level the whole time. If I have a huge load (4 divers and gear) then I have to use the tabs but i can still get up on a plane and step out at 21.5 -22mph... Before the fin I could not get up on a plane with 3 divers and 2 passengers...

I have a 2150 bayliner cabin (mini) cruiser with a 131hp volvo ( way underpowerd). A very deep V boat and about 3800lbs light wet.

I think you will like it... I plan to try one on my 12 ft livingston with a 15hp to see if it will keep the bow down...



still would like to take a look at that trailer...