Sure I'm not a regular poster on these boards, but hey.
I got the swipes first time actually. Pretty lucky. The first 20 or 30 were really sloppy though, I would land with my feet mis-aligned, or one bent more than the other.
But after speaking to Paul and Steve of Belfast City Breakers - they are a big crew here - I've got swipes down to a tee.
I got one legged swipes after about a week. Standing swipes took me a lil longer, 3 weeks I think.
Don't worry if your not getting them first time, tenth time or even hundredth time. I still havent figured out the pinwheel
Just practice, have patience, and believe in your abilites.