The very first thing that trips up most people is the cord. In some cases, they are completely defeated before the bow even makes its first stroke. With 550 cord being so popular in survival circles, it's a natural choice for the bow and drill cord--but consider its design. It was engineered to be strong, and that's a good thing. But it was also engineered to be thin and slippery for use in parachuting. It's these characteristics that cause friction fire builders to stumble. If the cord can't grip the drill, it cannot spin the drill. The ideal cord for your bow should be thicker, with better gripping power. Try 3/16-inch or even ¼-inch braided rope. If you don't have that on hand, double your 550 cord and put a twist on it. Failing that, you could borrow an ancient technique from the Arctic, and wrap your cord wrap 2 or 3 times around the drill. This will double or triple your traction, and put a stop to the slipping that steals your energy.