Has anybody ever tried to set up a mobile locker van like the one used on the beach at Broome. From what I can remember, the guy rented out odd bits of beach gear, but had a long trailer set up with about 50 lockers, rent was $3-$4 half day for each locker. And he stayed with the trailer. Cheep insurance

Wouldn't do for all spots, but the popular joints would be well catered for.
As for the little darlings, hopefully one day they feel the same pain as you have tightlines.

Wonder if sites like this have records.
http://www.coastalwatch.com/camera/cameras_large.aspx?cam=4000&mode=flash&state=NSWMineral