Why would I want a J-Cradle or Stacker mount? User profile Updated May 26, 2020 21:05 Follow Our J-cradles and Stackers give you the best space-saving solutions, letting you carry multiple boats on their sides. Related articles How to Properly Tie Down a Boat to a Yakima system What WaterSport mount do I have? Replacement Parts Replacement Parts How do I lock my kayak to my vehicle?