If you read Zac's blog carefully, you'll see that it's his mother who
doesn't know where he is. Zac probably forgot to send out an OK on the
SPOT. Having it set on tracking would be a lot of batteries on a
circumnavigation. I'm sure Zac knows where he is, on his boat I'm sure
he also knows his position.

I'm even more sure Neal / Wilbur's mother knows exactly where he is, right
downstairs!

--
Roger Long