There's a possibility in the next session or two that someone will try and shanghai the PCs--kidnap them during the night and take them to sea. My question is: how would you go about running such an ambush? What are the chances the PCs wake up before/during the attack? Any interesting rules for knocking out the PCs (other than just dealing a lot of subdual damage? I'm using the wound/vitality varient, so I may need to futz with how subdual works).