Kayak/Paddle Board Storage Rack Assembly Instructions 1. The first step to assemble the Rack will be to locate part (a) the 24” base, Part (b) the 24” base post and part (c) the 20” base leg. The base (a) will have two welded nuts on the bottom, they will face down. Fit the post (b) over the top of the base. Now align the base leg (c) to the two holes on the front. Use the 3” Carraige bolts (J) with washer and lock nuts to assemble the three pieces. Repeat for the second tower. 2.