so I had the same issue ,
my logic is that this only appears when you too hot in your wetsuit,
your body sweats the most under harness,
same as sweaty ass sitting on the bench for long time , start itching,
use thinner wetsuit , loose up harness , flash some cool water in
that's crazy , every time that spot getting pounded, why not to build rock jetties or storm wall ? Nothing can stop the advance of the ocean there, eventually there will be an opening there, as has happened during a couple of hurricanes. They tried to barricade the ocean at the lighthouse many year...