Prop wash Alisdair? On a big jet? Hmmm. You may be right on the last bits of approach with your examples, but not with the jumbos, as you point out. When I learnt to fly, on much smaller things, of course, we was taught to maintain the normal approach , wings level etc, and just fly a bit into the x-wind. The amount is real easy to judge, from the seat, cause your track is still straight down the runway, stall speed remains the same, easy, then just a squeeze of rudder to point the airplane down the runway as the mains touch. Was much easier than slipping it in, cause when slipping the drift is still there, and now you still have to point a bit into the x-wind, and also juggle the slip, skid and height loss, with a higher, and not placarded, stall speed. It all seemed a bit pointless, unless you were high, had a really short vector, and a bit of clutter at the approach end of the runway, and a xwind, of course. The point being, that so far as models are concerned, it is so much simpler to just point up a bit into the xwind and watch the model straight down the strip, than trying to juggle both added power, cross control of the model, still needing to point a bit into the wind to account for drift, and a higher stalling speed, specially as you are now standing on the ground watching from the outside, not sitting in the cockpit. Why make the thing way more difficult than it actually is?
FWIW.
Evan, WB #12.