There's more than one way to deliver an effective, fast-moving jump spin serve. As McMaster University men's coach Dave Preston explains here, one technique involves creating torque with a rotation of your upper body and another involves arching and coming through from back to front.
Here, Dave talks about what he recommends for younger players who are just beginning to develop their jump spins.
For Preston, the bottom line is this: Work with nature, not against it. That applies to jump spins and jump floats.