Hi: I fly my share of 4-5 hour flights and have found that I neglect
to drink often enough. The time just slips away. I found a little
gadget called the GYMBOSS that is essentially an interval timer. Set
the desired time interval, and it will give you a heads up by beep,
vibration, or both until you stop the unit. The thing costs only $20,
and may also come in handy for position reports, or any repetetive
task that tends to slip thru the cracks. All the best,, N531RW
www.gymboss.com