The upside-down boomerang is perfect! 
Fun trick once it's learned. But learning it can be frustrating (creating that trick was, for sure).
It's also fun to incorporate some beginner tricks like arm walker and rock-the-baby on a regen run: they are not beginner tricks anymore! 
Thanks Ta0!!! Yeah, I can see the many frustration of trying to come up with a solution that properly unwrap instead of going all over the place is the biggest
frustration I came up with. Your tutorial was quite helpful ( forum post IIRC )... The thing tho I like about UD boomerang is that on failed attempt, you don't destroy
your flooing or the top or anything but the top does travel quite a lot of distance tho
I should try to make a tutorial for it... it's honestly not that complex once you understand the basic and can do a consistant UD lasso.
