Not sure how many of you are interested, but while riding today, I found out it's possible to push start, an Ultramatic ( yamaha auto).
I wanted to know if the engine braking would still work if the motor shut down, so I came down a long hill, and fairly steep, in high range 2wd. Then i shut the key off, and the engine braking still slowed it down, just as well as it does with the motor running. After about 50 feet, with it shut off, i turned the key back on, and it bump started, instantly, and easily.
So theres another option,... if the battery dies, and you dont feel like using the pull rope. Have another quad, drag yours along with a strap, at about 7 mph, and if its in high, itll pop right off. If youre on loose dirt or snow, and cant get much traction, put it in 4wd.