the implication is that the calories you would burn hunting and foraging would be significant relative to the amount of calories you would gain from the effort.
Yeah, this is the thrust of my arguement.. The energy 'budget' is what it is known as... ie. Spend 1000 calories gathering 75 calories worth of food = not smart..
RESCUE is the objective, so focus on everything but food (signal flares, water, shelter) while you still have the energy, and you'll be alright..
Should probably stick to that..