Thought something looked odd....good point/question.

You're trying to state facts that you heard from an unconfirmed third party. There's no possible way your going to know the exact running surface from looking at a trailer that hasn't been fit for a boat. I've put a tape measurer to that boat and it's 29ft and change of running surface.

Variable. There are also some nice unique features to the bottom that one would not be able to catch unless you had it upside down and knew what you were looking for.

Unless of course the guy that built the trailer told me so......

Some hulls do not benefit from an extension box. This could be one of them.

The aerodynamics certainly play a large part as speed increases, as everyone who has taken flying lessons learns early on in ground school, that as speed increases wind resistance doubles.

Do a google search for NACA. You will find a lot of the test results from back in ww2 on till they became NASA. Noticed that in the past few years more boat builders are using a variation of a naca duct rather than a hood scoop.

I read a test on a couple of pontiacs in one of the car magazines a long time ago, same power, one with the standard hood, the other with the fancy hood scoop, top speed was 5-10 mph slower for the one with the hood scoop.

In bullet ballistics, boattail (sic) bullets maintain more energy/velocity at distances than flat base bullets, check any of the bullet manufactures reloading manuals or visit their websites.

In all testing from naca/nasa to bullet manufactures they have found that the rear end is actually more important than the front end. Closing the stream of air neatly reduces the vacum affect caused by the object passing through the air, to put it simply.

I have read test's that showed a flat front bullet with a tapered rear-end performed better than a tapered front end and flat rear-end.

Now that engine technology has pushed boat speeds to the point that aerodynamics plays a much larger roll, what has been used in airplanes, bullet development and race cars will become the norm in the boating industry. Why not take advantage of Bernoulli's principle and allow the deck configuration to produce lift just as cats produce lift.

Every time I see a boat with big hood scoops, my first thought is, there's some unnecessary drag. Perhaps they want to impress the bikini wearers with their big hood scoop!

does this help you find them??

Thanks for the pic

Its amazing what heresay there is here. The boat is 29'-11" with the 13" bussel included. Thats the facts.