Two Basics: Unless you have plenty of both, don't waste energy and fuel maintaining a signal fire. Keep three ready to light when you spot a rescue plane. And don't waste matches by trying to light a signal fire with a single match. Instead, use it to ignite a longer-burning super-match. Look around--soda straws, plastic spoons, strips of rubber, and twists of duct tape all burn long and hot. Once lit, bring this to bear on the signal fire.