Proper posture on a mobility scooter includes feet flat, back supported

https://wiki-site.win/index.php/Enough_Already!_15_Things_About_Buy_Mobility_Scooter_UK_We%27re_Sick_Of_Hearing

Appropriate posture on a mobility scooter consists of feet flat, back supported, and elbows relaxed; change seat height and tiller for ergonomic control.