I'm used to starting an 850 Commando off the stand with a pillion on the back (they soon learn to fold the footrest up !)It's not a matter of a lack of confidence, strength or balance but the 16H is awkward. A twin does of course fire twice as often but it seems to me that it is the need to sharply accelerate the flywheels which is difficult on the 16H.
If the oil has drained into the sump, it will be next to impossible due to the drag.