Thanks Pulp for putting into words the difference between David's style of doing them and the Cometa version. The basic trick, according to Salvador, was invented by Gustavo and he named them "órbitas" = orbits. Salvador had planned to have a video of Gustavo doing them but, unfortunately, he has taken down all his spintop videos from youtube (in part because of some stupid comments about his dressing and surroundings by a poster from Spain). I hope he changes his mind.