Also wanted to opine about the variable paces…After riding with 2.1, 2.5, 3.0, 3.2, and 4.0 bots over the past few days, I don’t think it works as well for the faster paces. It seems to me that the faster the pace is, the larger the delta between the in-draft level of effort required on the flats and the higher effort required on the climbs.
The 2.5-3.0 bot range is maybe where I would suggest the cutoff for turning off the variable pace. At 3.0 and below, I think it makes more sense because the delta is smaller and people will normally want to push a little higher on the climbs, but above 3.0 you are already pushing a lot higher pace on the climbs even without the variable pacing.