To determine which mount system will work best for you, measure the beam of your dinghy, divide by 2 and add 4 inches. Now measure your platform (transom to the end). You must add a number below to your platform length figure in order to determine which mount to use. " 0 - 2" for the 6" Mount" 2"-4" for the 8" Xtensions" 4"-6" for the 10" Xtensions" 6"+ for the 36" Xtensions
HURLEY DINGHY DAVIT