JEFF HYMAN AT COOPERSTOWN FUN PARK Proposed Waterpark Scale Won’t Be ‘Overwhelming’ Developer, Visiting Prospective Site, Says Market Study Guarantees Success By JIM KEVLIN • for www.AllOTSEGO.com COOPERSTOWN – It’s going to be big, but not as big as the maximum build-out in the Hotel & Leisure Advisors market study. H&LA’s report, released on Wednesday, estimated a year-’round waterpark development planned in Hartwick Seminary could fill 400 rooms. Jeff Hyman is planning 200 rooms, the principal of Hyman Hemispheric, the development…