Quote:
Originally Posted by thing
Care to elabroate?
I have two 12 footers than I use with the same 9.9.
My smaller one, 15" transom height, 43" wide. It will plane no prob.
My bigger one, 16" transom height, 60" wide...I won't...not even close.
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There could be 2 things going on there. The extra transom height (16") on the second boat is bringing your cavitation plate up an inch - but sometimes and inch or two makes a big difference. You want your cavitation (ventilation) plate just below the bottom of the hull for best initial results (on a light boat) in most cases. I like to see about 1" below the hull. That should put you right where you want to be.
The width of a 60" boat (again the second boat) is going to be a little tougher to bring up to speed (assuming it creates more drag due to the larger displacement and width of the hull AND is likely heavier as well) and would tougher to get on plane for sure.
Ultimately - a bigger motor is the best answer - as more HP erases the sins of a "less than ideal" set up on many boats - but not everyone has the extra cash kicking around to upgrade the motor or buy a second motor.
I would drop your motor to the "trimmed down" cruising position and see where it lines up. If it's high, try and dropping it somehow. A small jack plate is a good investment in my opinion.
Keep in mind if you are too low, it can also create an issue.
When working with a boat/motor combination that is "minimum HP" you really need everything set up properly to take advantage of any benefit a good set up can give you.
The first 15-20 years I probably bought, sold, set up and played with dozens of boats and I can tell you, with assurance, a 12 to 14 tinner, that weighs around 300lbs or less, even with a guy or two, should be able to plane with zero issues with a 9.9.