Well, before than anything, I want to thank to ta0 his friendliness and courtesy to make these videos available for all.
I think that the correct word to translate the spanish word "toboganes" into english language is "slides".
I completly ignore the reason to name this trick like that "toboganes".
The craetor of this trick, Gustavo castro, he has told me a little about the history of this trick, which, like regeneration trick, s´got, at least, like ...among 15 or 20 years to exist.
This trick was done by the yoyo players, those who played yo-yos and too played tops. A lot of tricks of yo-yo,were adapted, o were tried to be adpated for the trompo. Here, this trick made with the yoyo is called "trapecio" ( I believe that in USA too is called with that name). Some players did this trick, but none of them tried to do more than one, or two, or three.
Besides that is nothing easy at all to catch the top with the tip in that position, nobody imagined that it was posible to regenerate that way. And if you see, is much more easy to do it from the initial throwing with the boomerang, but while gradually the impulse starts to go down, to diminish, is more difficult.
Gustavo told me that he realized to start to do 10, 20, 30, and so and so..and..the toboganes were born.
Even to me, there is the impression that when you hit the top with your left hand, the top, the tip, is still tangled in the string, and when the tip "lands" in the string again, this action, the weight, it frees te top.
By optical effect, this culd be belieft. But, in the last moment, you must free it.
Sometimes, it could happen that this action be possible: the tip of the top still in the string, to be received by the another string and liberate it. But you are taking the chance to get tangled. I prefer, to liberate the top as you can see in the video.
I treid to put the screen in diferent perspectives, so, you can appreciate the movements of all the factors: both of the hands, the fingers, the position of the top, the time, the rythm, etc.
At the moment of write this, I´m into a hurry. Later, I will continue writing more about this, and to thank your nice comments; Thanks, to ta0, and thanks to all.!