I asked this question a few weeks ago but could not find a picture for your comments. I just got the 300th Issue of Triathlete. On page 28 they show someone in the wind tunnel. They have raised his aero bars skyward but the rider has some cupped elbow rests “or maybe they just look cupped to me” so he does not slide backwards. Does anyone know who makes these cupped elbow pads? One of the bullet points kind of talk about it.
It just seems to me that over a couple of hours, without cupped elbow rests your position would tend to move downward toward your forearms.