Doel-Fin

[davey buoy]

I have a pair of DOEL-FIN tabs to help plane out boat my boat. It's a 86 305 V8 mercruser inboard/outboard. If I install them do they make a noticeable difference?. There the model 185. Thanks for any help in advance, davey.

[Terry]

YUP

 

they will get you up on plane quicker

 

they will most likely lower your top end by 2 miles per hour

Edited July 10, 2011 by Terry

[davey buoy]

YUP

 

they will get you up on plane quicker

 

they will most likely lower your top end by 2 miles per hour

 

Thanks Terry, just wasn't sure if it would make that much of a difference. davey.

[Terry]

if you have a boat that gets up quickly you will not see any difference

but if you have trouble getting it up, it will make a big difference

 

but again they do take away some top end from motors that have trim/tilt

[misfish]

Heres a question for you. I only ask because,the boat I have,the owner never used the trim switch. When I took it out for a test run and used the trim,he said wow,that came on plane fast. Davey, if you like to go for a ride,Im very close.Lets see whats going on.

Edited July 10, 2011 by Misfish

[craigdritchie]

Doel Fin works best on boats that are underpowered, or otherwise badly set up. As Terry said, they help you plane but eat a bit of top-end speed due to increased drag.

 

You said the engine is a MerCruiser 305 - what's the boat?

[davey buoy]

Doel Fin works best on boats that are underpowered, or otherwise badly set up. As Terry said, they help you plane but eat a bit of top-end speed due to increased drag.

 

You said the engine is a MerCruiser 305 - what's the boat?

 

It's a Chris Craft scorpion 187. It has great top end, but with 4 guys and their gear fishing it's hard to get on plane.

Misfish I use the trim button and the motor is always all the way down when taking off.Two in the boat and she planes within 10 seconds.

I am also now running a 19pitch prop instead of a 21 which was very hard to get on plane. It is a 200 hp motor. Thanks for your help. davey