Is anyone experimenting with human powered flight based on flapping
wing aerodynamics (hovering wing motion rather than soaring)? I have
a number of ideas and would love to exchange thoughts on the subject.
Some of them are as follows:

Materials: light, strong, sandwich-layered foam like Voltec's
mini-cell.

Leg wings, Power tail or Body fin (like a ray).

Wing shape based on rounded 3x5 rectangle with leading edge curled
down and trailing edge curled up.

Wing design using tapering Spirals intead of sharp angles.

Crawl or Doggypaddle style stroke rather than Butterfly.

Standing take-off, like a pidgeon.

Figure "8" wingstrokes (no upstroke) so force is distributed over
whole stroke.

If anyone has tried any of these or has any coments, please contact
me.