I have been bird hunting since i was old enough to walk.
We always had great bird dogs. we used them hunting wild quail all over the country.
We also owned a place in South Dakota were we Pheasant hunted. We never used any dog in SD Pheasant hunting we just walked the standing corn, shelter belts,and the ditches. When you got close to the end they were comming out.
If you know were the quail are, i suppose that you could walk em up and shoot. But, you are missing the best part of quail hunting (the dogs)

Quail Hunting is a gentlemans sport, It is not about how many you kill.
Quail Hunting is all about the dog, the fellowship with friends, the outdoors, and the conservation of the quail.
There is nothing that is any better than a sylish bird dog on point with a brace mate honoring the point. Walking in front of the dogand a covey exploding out of the cover.