don't mind at all...
I have a low spinal cord injury - 1st Lumbar vertebrae. So basically waist down I have no movement, but I do have very little quadricep function. Each injury is different. I'm fortunate to have a good bit of "mobility".
so, all i do is wheel the jack to the car then transfer out of my chair to the ground to place the jack. After I am on the ground it's easy. I kinda wiggle my self around and use the car to pull my self where I need to be.
Only problem I have sometimes is getting enough "leverage" on bolts and stuff. I can't use my legs to brace myself, so it's all upper body. It can be difficult sometimes but you find a way to get it done when you are in a wheelchair. Takes a little longer, but it can be done.
helps to lift weights too.