tried this today: using 2 computers, 1 with modified hfs files, the other one clean client. have the modified client hosts boats, clean one joins.
spam stuff as fast as possible (kraken, lakoria, ship graveyard, all raids, etc...)
the host got banned, but the account that ran on a clean client didn't. Happened twice already.
At least this way even if the one with the clean client gets banned, you can QQ like "I just joined a hacker's boat...500000 times, i'm not hacking =/ why u ban me"