A Knox County developer and Louisiana nonprofit are proposing to build a year-round resort with new ski lifts, a hotel, marina, condominiums and more at the site of a longtime ski area overlooking Moosehead Lake that has fallen into disrepair. The $75 million investment would create 300-400 jobs and result in $2.9 million annually in property taxes in Piscataquis County, the least populous and one of the poorest in Maine. The developer, Perry Williams of Spruce Head, and Provident Resources Group of Baton Rouge, Louisiana, are asking Piscataquis County’s three commissioners to sign a letter in support of the project.