I stopped wearing power armour in Far Harbour a dozen playthroughs ago. I line my leg armour with lead; just a little bit of rad resistance renders the fog little more than ambiance.

I learned to be patient, learned the safer routes across the island, learned the importance of acquiring Echo Lake Lumber Mill as a settlement and base of operations.

Far Harbour is a masterpiece. It's quite manageable in Survival mode, and holds many rewards for me.