Mr Bill is correct. With the dependence 'solely' on the fenders to keep the boat 'away' from the dock, if a fender ever becomes 'displaced' (no longer between the boat and the dock) due to wave action ..... you're going to have to consider the possibility of some future gelcoat, etc. repair.
Thats why I recommended using straining lines (Line "E" in my previous diagram) to keep the boat 'off' the dock.
Some folks use 'dock wands' .... stout and long and tapered fiberglass 'rods' which are 'base connected' to a spring ... like holding the boat off the dock with a fishing rod and line ... the line connected to the boat, the rod 'well bent' so the boat is kept 'off' the dock by the action of the spring and bowed rod trying to 'straighten' themselves out.
Dont depend on 'fenders' to stay put in a storm.
Thats why I recommended using straining lines (Line "E" in my previous diagram) to keep the boat 'off' the dock.
Some folks use 'dock wands' .... stout and long and tapered fiberglass 'rods' which are 'base connected' to a spring ... like holding the boat off the dock with a fishing rod and line ... the line connected to the boat, the rod 'well bent' so the boat is kept 'off' the dock by the action of the spring and bowed rod trying to 'straighten' themselves out.
Dont depend on 'fenders' to stay put in a storm.