Quote:
Originally Posted by flyingfrizzle
, , , The swim platform will be 72" wide extending 6" past each end of the floatation tub. The flotation tub will be mounted low as possible, at 2" up from the hull bottom to clear the rise of the water rolling off the back of the transom. The tub will also have a 20 degree vee on the bottom to match the second step deadrise so that it will parallel with them. This will leave just enough room under the bottom of the tub for a garboard plug set center of the transom. The vee section of the tub will be angled slightly upwards to the rear point to allow an additional 2" of clearance for the water surface. This should be enough to keep the flotation bracket from dragging the water when the boat is running with no trim . . .
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Good idea on minimizing setback and making a wide tub!
On the width of swim platform, you might want to consider extending it far enough past flotation tub to be able to mount a swim ladder underneath platform! Regarding angling bottom of swim platform, you're losing some flotation doing that. Looks like you're planning to mount it a bit lower than mine to gain flotation (good), so understand desire to prevent dragging in water, but might want to send a PM to Don Herman about that. The Hermco bracket is straight on bottom and longer (30"), but it doesn't drag in water when on plane, even at 12 mph. Even if it did drag temporarily coming on plane, it would act like a trim tab and provide more stern lift to help boat get up on plane, so I don't think that's a bad thing! Might look at making bottom straight with no slope but mount about 4" up from bottom, and see which design has more flotation.