I could handle the clutch on our H when I started driving, but our 4030 gave me trouble. I didn't weight enough to push the clutch in, so I had to wedge my butt up against the seat.
That sounds like my twin brother and I when we ran off through the woods with dad's old 3/4 ton Chevy plow truck. We were 8yo at the time
I would wedge against the seat to run the clutch, ease off of it, then you would see my head pop up above the steering wheel, could just barely reach the gas pedal with my toe
Brother was sitting in the middle shifting
Good thing it was a granny three speed, and we could only use low and reverse. Hadn't figured out how to shift to a higher gear yet
Butt's were a little warm after grandpa got a hold of us. Was really warm when dad got home from work and grandpa told him what we did
Then they had the nerve to laugh about us running off with the truck a week later
We were roll starting the old McCormick by 10 and driving the Ford between fields with the sickle bar mower at 12 while dad followed in the truck