Whales tail

[philsicle]

I don't know if it is the proper terminology but what exactly do the fins you put on your lower unit do and will they help plane the boat out?

 

[Spidybot]

Re: Whales tail

They provide lift. They also cause drag.<br /><br />Do a search here for FIN or DOEL-FIN. Many boaters here prefer trim tabs - SmartTab is a favourite.<br /><br />Check http://www.nauticusinc.com <br /><br />and/or<br /><br /> http://www.nauticusinc.com/manual.pdf