Stump Support for Mobility Scooter

Hello all! Not sure if anyone has come across this issue, but I'm renting a scooter to use at Disney World in December. I have been searching for a stump support that I can connect to the scooter for my stump. While my amputation was above the knee, I find that it still hangs over the chair a bit when I'm in my wheelchair. I have a stump support for my wheelchair but of course that won't fit on the scooter. Anyone had this issue and have a solution or any recommendations? The place I'm renting from does not have anything.