I won't tell you what you should do, but I'll tell you what I'm going to do. I'll be mailing out a letter snail mail to my local police dept the day "of" my ctb explaining what I did, where to find me, any precautions to take, etc. It will be on a Saturday. That way, since there's no delivery on Sunday, and as slow as the (US) postal service is, I expect them not to receive it before Tuesday at the earliest, maybe Wednesday. I don't have anyone to find my body at all, so there's really no other way to do it for me. I suppose, eventually, when my mailbox starts overflowing, authorities would be notified, but that could take weeks, as I don't get that much mail. The one thing I will say is that when you send something to contact authorities, whether by mail or electronic means, you better be DAMN SURE you're going through with your ctb plan.