Freeze or partially freeze your hydration pack the night before your hunt to use as a refrigerator. This aids in keeping perishable foods cold.
Eat a balanced breakfast including protein, carbohydrates, and fat before going out for your hunt. Lean protein is difficult to consume at 4:00 AM so be prepared with pre-boiled egg whites, protein powder, or cottage cheese. Having a well balanced breakfast will give your body the energy that it needs to get your hunt started.
Wear a watch. Make sure that you consume balanced snacks/meals every 2-4 hours in order to keep your blood sugars level and energy up.
Consume perishable foods FIRST.
Remember that consuming 2oz of Jerky is the equivalent of 4oz of hydrated meat. Avoid over consumption by weighing your Jerky prior to your hunt. It will then be ready to grab and go.
Drink plenty of water and stay well hydrated throughout your hunt.
Bring with you or add directly to your water an electrolyte replacement. During heavy exertion, you lose electrolytes when you sweat. Replenishing electrolytes is essential as proper balance is essential for muscle coordination, heart function, fluid absorption and excretion, and concentration. Watch out for high sugar concentrations in many supplements.
Bring along a Gallon Ziplock bag to store and contain any smelly lunch trash.