Yes, that is an option. I took that route as cheap hydrolock protection.
I start up the bike with the valve off, and BEFORE I hit the kill switch, I turn it back off. It is 2nd nature to me now, even if I ride my other bike on Saturday, I can ride the Connie on Sunday and still remember to hit the valve before each stop.
For a downside, if I let someone ride my bike, they may not remember to turn the gas off before they kill the engine. Luckily no one wants to ride my burgundy whale but me!