Theory is taught, tasks are practiced, experienced gained. Prior planning is essential, but being prepared to change the plan and quickly adapt to an ever changing picture, is crucial. How many times have we gone out and painted a perfect picture for ourselves, only to be a little dejected when it doesn't pan out that way? It's different for me as an ex Aggie. You soon get experience after doing 60 take off and landings in one day. Pull out of paddock, lose airspeed, power off, white arc, full flap, 100 ft high, x-wind, a little downwind, airspeed good, prop pitch fine, no time for trimming, into wind wheel down first, then the rest, flaps up............Sorry, fell into a bit of a trance then. My point here is, that you don't need a stable approach for things to happen nicely at the pointy end. But when you are starting out, it is a good starting point. When your eyes are firmly planted at the end of the runway while flaring, who cares what happened on downwind and base.......its how you played the cards you were dealt. And to add fuel to the fire.......my previous description of the Ag landing does not lend itself to attitude controlling airspeed etc.......to me, (primrary effects of controls), power gives you speed.....and the stick always steers the damn thing!!!!!