First and, I think, about the only time I rode as a pillion passenger was on an old Norton dirt bike. I must have weighed about 150 pounds then and we went out hill climbing along with my next door neighbor on his Triumph Cub. I didn't think about it much at the time, but, my, we sure rode some steep hills, a lot of ravines and so on and he handled the bike as though I wasn't on the back. Still impressed by that.
Malia says no way will she ride on the back of my bike, so that's it for now.