The Tide-Pulley for Use at Fixed Docks in Tidal Waters
The Tide Pulley, when affixed to one of the attachment holes at the upper end of the KayaArm mast, enables height adjustment of the KayaArm arm that may be needed due to tide level changes upon return from a kayaking excursion.

It can be used to adjust the height of the KayaArm from the water level while sitting in your kayak (see video for demo).

It is intended for paddlers with fixed docks in tidal waters who experience a water level change greater than 2” while out kayaking. The height of the arm can be adjusted from their kayak at water level instead of at the top of the KayaArm mast.

The tide pulley is not needed for floating docks.