Mutiny!
Finally your back mutinied.
Roger, you have been cruising since July, and unlike other "soft Americans" you have avoided the comfort of marinas, choosing to anchor and re-anchor without the aid of even a mechanical windlass, you also choose to row your dinghy instead of having even a small 2HP outboard, and for the most part you have no one to share all that effort, plus all the loading and unloading that occurred.Mine appear to be worn nice and evenly, heel and ball of foot. Nothing radically off center. I think there's more to it than that.
Finally your back mutinied.