I'm going to be bold and delete this track and path to the South. There are no Strava traces on these, but plenty nearby both the path you mapped and even the tiny more-South track. Over 5 years, I cannot see it on any Mapillary from the road. LIDAR shows nothing but random terrain and there's no tree separation as a track would have. If there was a path here at some point, it's more than likely overgrown to invisibility. Last time I was at the path/boardwalk intersection, everything South was flooded and basically a marsh, so it's unlikely any path survives.

I'll leave the note open.