In-line fuel shut-off valve

I'm a new member here. Bought a new 52-in. raptor last year and very happy with it so far. Last fall, I was prepping it for winter storage and had a gallon or two of gas in the tank. I'm thinking of installing an in-line fuel shut-off valve. My old mower (a Honda 3011 had one and all I did was add a little stabilizer, close the valve, start it and run it out of gas. Never had any problem starting it in the spring. Anybody have any comments?

In-line fuel shut-off valve