DRILL THE MOUNTING HOLES.
Tie a safety rope through the top hole of the track in case the track falls into the water. Install the supplied 1/2-by1-inch stop bolt, lock washer and nut in the lower track hole. Position the track within the proper operating range. Don’t remove the corrosion-resistant backing tape. Mark the top hole, remove the track, and drill a 1/4-inch hole into the piling. Using the top hole only, bolt the track snugly in place. Ensure the track is plumb and centered; mark all the holes and remove the track. Drill 1/4-inch holes for each of the marks.