Searching for N sites is decent advice, but if you're playing with one of the more recent CBM builds I think the Kelp Fortresses may've been made less common.
Does anyone know if the blood spell Three Red Seconds works on underwater provinces? That's potentially another way you could get an UW fort.
Have you messed around with the more recent CBM builds Micah? Haven't seen you around on the forums in a while. Have you returned to defend / pad your position atop the HoF?
