Originally Posted by
colnago62
I read that at some point on a high speed descent, the energy that it would to take to increase your speed becomes so great, and the gains so little, that it makes more sense to become aero and spend the time recovering.
Above 60kph and you're getting close to 1000W from gravity. Adding an extra 400W will give you a little speed but it's much better to find anyone to tuck behind. Even if you're not right on their wheel there are significant benefits to be had from drafting.
Without a technical descent it's a poor place to try and distance your competitors. Like attacking into a headwind.