hahaha I have the same trouble xP i've build my house (our castle :P) near water and build on it (the fartter I can) and my boat in between stones ( one day some higher stone wall), to keep it safe, I think a might have found out what make the dwarf coming, its the craft table that I have who isn't hidden in 4 walls BUT I still have some nix who came to fight them too xP and how ssad all me stonesto build my floor just fall all deep in water..... some times just jumping in it and clicking to catch it help but not all the times.

I would have love it if we can build some HUGE doors (we meca or not) tu keep our boats safe :D
(Sorry for my english i'm laking practice ^^)