How about;
1. remove chocks
2a if pointing downhill run alongside and hop in, flick chocks onto LH seat
2b if pointing uphill, just wait and swing yourself in as it comes past.
3. fire it up and get things going on
4. pump on the foot brakes to get it slowed down
5. when everything's stopped and with enough pressure, apply park brake and complete other checklist items
just like bump starting an old FIAT isn't it?