The Boomerang, a pole dance spin, is also known as the Carousel Straddle, Open Leg or Open 'V' spin. The key to this spin is holding yourself away from the pole to spin.
Use your dominant arm to hold the pole on top and grab the pole on bottom like you are taking change from a cashier. This is the arm that is going to hold your body weight away from the pole as you spin. Also, keep your legs straight out and toes pointed to lengthen the legs as you spin.
Here is a video clip that demonstrated the spin:
Do you want to learn some exercises that will make you stronger for pole? Check out my page here with ideas on exercises and conditioning to get stronger fast to be able to do more with your body! I also have an e-Book called "Pole Power" that outlines lots of exercises on and off the pole that you can do to up your strength.
Some girls are fit and strong enough to just jump into doing crazy tricks - these are the gymnasts, aerial dancers or just strong daredevils. But the majority of us have to start with basics. I even had a gal once who was a competitive weight lifter and bikini contestant come over to try my poles out. She was incredibly fit but not for hoisting herself upside down let alone hardly hold on for any length of time.
It takes getting your body used to:
Before trying any pole dancing tricks please: