Keith Cooper and Todd Brice of SlipFinder

SlipFinder: The nautical Airbnb

BY GREGORY ZELLER Keith Cooper’s goal is not immodest: He’s looking to forever change the recreational boating world as we know it. The way the Long Island native and his partner, Amityville High School chum Todd Brice, see it, boaters have plenty of options – digital included – for reserving transient boat slips away from their home ports. But they mostly involve advance planning, which according to Cooper sails in the face of recreational boating’s…