On Nov 2, 7:56*am, HarryK wrote:
On 11/2/10 7:52 AM, Jack wrote:



On Nov 2, 7:35 am, *wrote:
On 11/1/2010 10:52 PM, wrote:

On Mon, 1 Nov 2010 18:38:06 -0700 (PDT),
wrote:

On Nov 1, 5:51 pm, * *wrote:
On Mon, 01 Nov 2010 11:36:59 -0400, * *wrote:
On 11/1/10 11:15 AM, Frogwatch wrote:
A friend of mine built a custom pontoon boat roughly 34' long with
beautiful woodwork. *It is powered with a 90 hp and he claims he had
the prop pitched by an expert. *He attains 18 mph so he is planing
some but gets very bad fuel economy, I'd estimate 1 mpg. *Underway,
most people sit on the foredeck so she probably is bow heavy. *Is
there some way to get her to plane better? *He does have one of those
Dol-Fin things on the motor but I think he needs more planing surface
along the pontoons.

This might do it:

http://tinyurl.com/367x6pm

I don't know what a custom 34' pontoon boat weighs, but I'm guessing two
tons or more. That's a lotta weight and length for a 90 hp outboard to
"plane better." I doubt a lower unit wing is going to make a difference.

This would do it.

http://tinyurl.com/29cbqav:)

It should....

This is what the boys over on Pontoon forum are doing

http://www.pontoonforums.com/download/file.php?id=3386

http://www.pontoonforums.com/download/file.php?id=3390

http://www.pontoonforums.com/download/file.php?id=3018

http://www.pontoonforums.com/download/file.php?id=3019

Don't see too many pontoon boats out on LI Sound. *:)

They tend to be popular on inland lakes and places where the weather
is warmer than LI Sound. *:-

I remember several warm days out on Long Island Sound when I was a
Connecticut Yankee. Several, at least.

Those mods to the pontoons look interesting. Now, if he went to a
larger engine and added planing strakes, could he expect better MPG or
just higher speed. (fuel flow meters ought to interface with impeller
knotmeters to get mpg).