If they store 100 boats during the winter and if you assume that the average boat is 22' and per foot charge is around $28.00 per foot, the winter storage business would generate about $60,000. That would cover about 6 months of mortgage and insurance costs. all your other costs would have to be earned during the boating season including the other 6 months of mortgage and insurance payments. Don't know how much shore frontage there is at this yet unnamed marina but it sounds like the developers may get a crack at it. Afterall, its apparant that the state doesn't want motor boats on Winnipesaukee anymore, so who would want to invest in a marina?