[jimhuck]

Powder could get messy, I would think. Don't you think dextrose tablets would be adequate? They come in all shapes and sizes and they're the most effective method of raising BG quickly. You can get the little 1 gram Dex4 glucose tablets and put them in a baggie.

Obviously, you'll also need food to maintain BG. Beef jerkey and trail mix (nuts, raisins, maybe even M&Ms) would a good choice for that. Fats, protein, and moderate amounts of complex carbs are good for long term exercise.