Do you think you would notice performance impacts between these two scenarios leading up to pack swap at the feed zone?
- hour 1: 100g
- hour 2: 60g
- hour 3: 140g
VS
- hour 1: 100g
- hour 2: 100g
- hour 3: 100g
GI Distress maybe at the the start of hour 4 after you had to gulp down the rest of the pack on the way into feed.
Perhaps you plan on underfueling via liquid supplementing the delta with gels. This way if you crush the pack in 2 hours and it had 60g/hour, (180 total) you know you’re not at the point of no return for your stomach. and it had fuel for 3 hours, you know you arent at a level of carbs thats going to nuke your GI.
My last piece… Carb mix is sticky and the mouthpiece getting all gunky vs just water would probably drive me insane.
The largest benefit here is the 0% chance of losing a bottle which means losing an hour of fuel since its all strapped to your back.
All that to say - i’m probably in the minority but i dont think you need to overcomplicate it.