The technical term for this is 'crabbing'.
Cross winds can be pantaloon fillers with three axis aircraft like this one. The pilot at least has the rudder and tries to give it a deft kick right before contact - and then hammers the brakes. It may not look like it but this is a magnificent piece of aviating.
Try doing that in a weight shift aircraft like your flexwing ultralights. The skidmarks at the Vegreville municipal airport are not all black, and that is all I'm gonna say about that, HAR HAR HAR!!!