So playing as England in the Death and Taxes mod it seems difficult to actually use the Royal Navy to defend myself. Obviously it's big and powerful enough to curbstomp any foreign navy, but it can only be in one sea zone at a time, unless I want to split it up (in which case the AI will destroy it), so French/Castille stacks seem to be landing at will along my coasts. Coupled with 30k scottish troops I'm being owned.