From what I've read Madasaman, as long as you have a single axel and a motor mover, they aren't that tricky (though they can be time consuming)
Without a motor mover they are almost impossible because the wheel has to line up perfectly.
Apparently with a twin axel, they are even worse, and some people on these forums mention they only fit one Alko wheel lock purely because its so difficult to fit to both wheels.
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