Why are you paranoid about running out of fuel? Just for fun, make the committment to killing the engine during your flight when you know you have plenty of altitude, and practice flying and landing your plane without power. If you're really nervous, go ahead and get an experienced flyer to work with you on the buddy box. You'll soon discover that deadstick is no reason to panic. As you get more experience with it, you're anxiety level will go down, and your enjoyment will go up.

In the meantime, a cheap kitchen time clipped to the brim of your hat or to the transmitter antenna will work just fine.

Brad