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Re: Tires as Fenders
casey, if the boat is small enough, there are things called "dock whips" or something like that. They are fiberglass rods that you bolt vertically onto the dock. Then you bend them down, over the boat, and tie the end to the far side of the boat.
The rod tries to straighten out, which in turn pushes the boat away from the dock.
Not perfect, but they can help if sized properly and at least in moderate conditions.
Tires that are in the water or soaked with tidal changes, will grow barnacles and those of course will chew up the hull. So like any other fender the tires should be kept high enough to be dry.
Of course, you could try something industrial along the lines of shock absorbers, pinned into the dock on one end, pinned into the boat on the other. Or light truck springs from the junkyard, holding off a padded fender board. I have no idea how much "brute force" you'll need to gentle down that dock but sometimes a clever machine shop can suggest something, if you're allowed to install things.