PAPI - Last bad (red) windshear encounter was at EDI it certainly has its days, its a good discussion point that I got asked when in command training, thinking was in relation to the (more than likely) go around if the x-wind was pushing you towards the terrain then less flap, if you were into wind then more flap.
Great discussion point that leads from x wind landing technique onto OEI go arounds to perf data and where to find it