While the water space beside the dock needs to be large enough for the kayak, the actual dock space required for the KayaArm and for entry/exit maneuvers can be as little as 3 to 5 ft (1 to 1 ½ meters).
Mounting details will vary depending on dock construction. The following is one example for mounting on a straight sided wooden dock (Refer to Figures 1 & 2):
Place the assembled KayaArm onto the edge of dock and fasten it to the dock using at least 2 deck screws (not provided) into the top surface of the angle (4). Fit the cedar shims into the approximately 1/4″ space between the back of the mast and the vertical surface of the dock (see Figure 2) at a location directly behind the lower holes in the mast flanges. HINT: Push the tapered shims, simultaneously one from each side of the mast and one in front of the other, into the space behind the mast to a distance where this space is filled when the mast is vertical.  Install 2 deck screws (not provided) into the lower flange holes.  Optionally install more deck screws through additional holes provided in angle (4).