I used Litko's various laser-cut markers back in my War at Sea days alongside Gale Force Nine's offerings, and while primarily meant for Victory at Sea I think a lot of their line could be adapted to Sails. Not as good looking as the islands GF9 made for Wizkids Pirates, but still kinda cool--and might be good for WWII Pacific or Mediterranean theater Wings too.

https://litko.net/collections/litko-...eid=fdfb25f79b

Reefs:


Rocky Islands: