Exactly!
I've tried to make this point a few times, but once your speed on a steep downhill exceeds what you can realistically maintain at your max cadence in your highest gear (40+ mph or more) pedaling is just a waste of effort, and it may even not increase your average watts, as you will have less energy for when the gradient flattens out a bit. This is true in real life, and it is true in bkool as well.
Since most of you seem to ride right on the limit of your strength and endurance on these league rides, it makes sense to take the opportunity to rest and get back some anaerobic capacity for use where it can assist. It has been shown that recovery is faster the further below your threshold you are riding, so a rest on a steep downhill will give you more watts for when it counts.
I did do some calculations a while ago to try and show that it is always best to expend maximum effort on the steep, slow bits and less worthwhile the faster you are going, as aerodynamic drag is exponential and at higher speeds extra watts buy little extra speed, whereas as gravity is linear, so extra watts gain more additional speed. This is in the real world, and also in any decent simulation.
I read it put beautifully once, that it is better to power up the hills and freewheel down again than the other way round!
My 2p worth...
It strikes me that we would not want to be too prescriptive on this, learning to finesse the simulation to gain slight advantages seems not worth worrying about, riding in a manner that is most efficient in the simulation and probably the real world. Drafting, freewheeling downhill once speed gets high enough, hitting it hard at the bottom of slight inclines to carry momentum as far as possible, and burning up any remaining anaerobic capacity in a mad sprint at the end are all valid tactics on road and in bkool.
It seems that riding in wildly unnatural ways to exploit blatant loop holes in the simulation software/hardware is like cheating at solitaire, and to no-ones advantage, especially the one doing it. So almost stopping before spinning up as fast as you can and then almost stopping again sounds to me like taking a Strava KOM on your motorbike, pointless and obnoxious!
Not sure about the gunning it at the start thing, it seems to exploit the extreme on/off loophole, but only once! If one person does it, it kind of forces everyone else to, but it is not a natural riding style as few people would choose to start a road race trying to go as fast as they possibly can. Personally I think it is unfortunate that it works this way, as it artificially spreads out the field right at the start and reduces the prospect of interaction between the riders that you would find in a real ride.
Geoff