No friends, not every day is sleeping in, cocktails on the Lido deck and sunshine. I think only sailors understand that sinking feeling in the pit of the stomach one feels when the head (or toilet for our non-boaty friends) isn't working properly. In an effort to avert the inevitable, lots of frantic googling is done for things like "head won't flush" "blocked marine head" and "how to unblock head", which results in a veritable slew of remedies like running vinegar/bleach/si