Gravel / Gravé / Gnarmac / Groad / ATB

noticing the rock was in the way of my line, while considering my 700c x 2.1 wheel choice would noticeably limit my turning due to toe overlap, I would center my weight over the back of the saddle and bend my knees and arms anticipating to "pump" them at the key point to ensure my front wheel cleared the rock. knowing that my wheel choice caused me an additional 250g to my overall system weight, and me being 65kg with no strength training in 2 years or more, i would seek to only clear the front wheel, and once placed safely on the rock shift my weight over the front of the saddle to pedal pedal through half a turn, pulling the back up behind me, being sure to quickly re-center once over the obstacle, to ensure i did not over compensate and end up over the bars

this would leave me sufficient time to stop at the bottom of the descent to look back at my riding partner, who chose the 650b wheels. carefully picking their riding line in order to not encounter any large drops, knocking their bottom bracket or forcing a loss of momentum, but also to protect their £150 compass tyres. I would say something up like "you're doing great!" or "seems to smooth out down here, maybe you will over take me due to the more fishtank like gravel!" this reassurance will not increase their pace however, it might actually distract them, forcing them to fall due to their wheel over turning and having no foot there to limit its rotation.