Capt. Terry -
So... I used your formula and came up with a CG shift of 1.15 feet back towards the stern. The only variable I changed was the I/O engine to dual outboards. I haven't played with fuel tank size or location yet, or the battery location either. I am also waiting on a spec sheet from Armstrong for a dual engine bracket so I know exact weight of bracket. Would also be nice to know how bracket floatation will affect CG.
Going to dual outboards appears to only add 150 lbs. to the boat. Hopefully that 1.15' shift in CG won't adversely affect how the boat sits in the water. Or...hopefully with a little more engineering I can trim her out nicely while keeping the deck dry and the scuppers draining.
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