Copied from the OP, an OMG don't do it like this. He's probably on a Brooks B17 with the nose tilted up and that's the reason he can't roll his pelvis forward and flatten his back. Looks painful.
This is my wife and I on our tandem in sport trim. That's also our touring trim with the aerobars traded for a bar bag and 2 panniers on the rack with tent and sleeping bag on top. Same position for us. In our 60s, we rolled at about 18mph on the flat
with the bike set up like this. That's full camping gear for the two of us. Having only 2 panniers is a big saving in weight and air drag - especially on a tandem. We were only .5 mph slower in touring trim on the flat. Avenue of the Giants.
