> And keep sane having some sort of structure (when to wake up, when to go to bed, when to eat), monitor tidal changes. Though you could just stick a piece of

> And keep sane having some sort of structure (when to wake up, when to go to bed, when to eat), monitor tidal changes. Though you could just stick a piece of wood into the sand, mark shadows thrown at sunrise sunset and divide the circle's span however you want for your time system..