Nice photos! The blue thing doesn’t look to be causing as much windage as I expected. If by any chance you have a photo showing in a bit more detail how it’s secured up there, could you please post it? I think I’m going to order one 20L for next season (I feel/hope that should be enough to prevent inversion in conditions I encounter), though there might be problems with shipping the CO catridge…
Thanks + all the best!
Mato