I've used Jungle Wheels and they're right.
It's just like backing up a trailer.
However, I did lose my big toenail on my left foot this year.
I got caught between some riprock and backed into my foot just enough to slip the edge into my toes.
First time in over 12 years.
It was entirely my fault, I took a shortcut and payed the price.
It's about halfway grown out now.
Remembering all my departed friends.