Location, location, location!
Ft. Me started off as me just digging a giant hole in the sand to see if I could find anything interesting - be it a crab, clam, shell, or body, whatever.

Then I started piling up the sand as walls, and it went from there. I even added turrets and a seaweed flag. I even built another wall of protection in front, an effort which proved to be totally pointless. Nonetheless, Ft. Me stood proudly on the shores of Henderson Beach State Park for about 20 minutes. More photos are below.