A new ranking praised Lake George for its marinas, scenic coves, waterfront dining, and family-friendly attractions.Credit: A steamboat on the water at Lake George, in New York.With millions of lakes across all 50 states, lakefront living has long been a defining feature of the American lifestyle. And while some lake towns stand out for affordability or sandy beaches, others are magnets for boating enthusiasts.Located a few hours north of New Yo…