Minnesotans are putting a tidal wave of imagination into their pontoons — from luxe water slides to pirate planks. “Pontoons Gone Wild.” “Pontoon Hunters.” “Pimp My Pontoon.” If a TV producer stumbled on the gems floating on our lakes, there’d be a reality show waiting. These aren’t the kitschy putt-putters with plastic chairs and artificial turf, either. Pontoons, while still floating platforms, are larger, more powerful, more luxurious and sometimes even outrageous. “The pontoon used to be grandpa and grandma’s boat,” said Brent Wiczek, manager of Nisswa Marine. “We’re selling pontoons to a much younger generation than we ever have....