Step1: Using spares as shown in below drawing to assemble the base frame.
Step2: Install the base frame to boat. Position the base frame on the deck, we recommend to install it 15in-20in back from the center console, put the cooler on the base frame and confirm the final position you prefer. Once your confirm the position, fix the 4 mounts with supplied self tapping screws.
Tips: Starting each hole with your drill in reverse to prevent spider cracking of the gel coat finish.
Warning: If you are unfamiliar with your boat's construction, please consult your boat supplier before drilling holes.
Step3: Assemble the back rest with 4x M10X30 screws.
Step4: Then attach the back rest to boat. Note the slot hole on the base frame allow you adjust the angle of the backrest. Test which position is the best for you and mark position of the 2x mounts, make sure the left and right are symmetrical. Once you confirm the position, fix the 2 mounts with supplied self tapping screws.