Minnesotans have the opportunity this week to help decide the future of Voyageurs National Park. National Parks officials are convening informal meetings throughout the state in order to develop a management plan for Voyageurs. The park is relatively young; it was created in 1975. But in its short life it has been the subject of litigation, mediation, and now, some fear, overcrowding. Minnesota Public Radio's Amy Radil has this report. The prevailing wish among people at the Voyageurs Park planning session held Tuesday in Duluth was for the park to stay essentially