After seeing Vince Deur's new movie, surfers looking for the next hip spot to hang 10 may be inspired to head for the West Coast — of Michigan. The 38-year-old filmmaker hopes his documentary, "Unsalted: A Great Lakes Experience," will expose what could be the nation's best-kept surfing secret: Under certain conditions, great waves can be found in the Upper Midwest. Richard Prichard reports in A.P.