I know the YouTube channel you speak of and I am familiar with the leg transitions and heel clicks on the floor. It seems to me like the girls do a lot of circling with the legs bent. I teach this in some of my pole 1 classes and call the leg circling "can can kicks." The way I teach the leg circling is to lie on your back with both legs straight up in the air, together. Keeping one leg completely straight, bend the other at the knee and start to draw a circle with the foot, inward. Straighten the leg after a circle or two, and then switch legs and circle again with the other. Your right leg will circle counter clock wise and your left leg will circle clockwise. I always circle the legs inward. You can circle them outward, but for me it's a little more difficult and not as natural. As far as the heel clicks go, I spoke with a stripper in class about it once, and she told me the reason she does it a lot is because of the noise, and how when she's in the club dancing, it will immediately bring attention to her on stage from people around the club. It can be a startling noise, so it gets people to look at her when she does it. It made sense to me, although it seems as if the girls Webstwe and Luckygirl do it as part of their style and flair. I hope my explanation helped some!!