That is worth a call to the AHJ. I would prefer a stranded wire in that application for the reasons you mention and in salt water I might "suggest" for it to be "potted" (gel shrink wrap or something) into a terminal but that would just be a suggestion. I don't think I would find the language to make it so. That is more from wiring boats than docks.
The bottom line for everyone should be safety.
If something is required to be bonded, it should stay bonded.
