Cat's Claw Ridge Stadium - Iridescent Point
Location -90, 6310
Sinai Stadium - Falling Embers
Location 3100, 5500
River Plains Stadium - Liberty Stadium
Location 1030, 3980
7 Lakes Stadium - Rainbow Hill
Location 1350, 60
South Egypt Stadium - Shooting Star Park
Location 1190, -4835
Be sure to modify your design (if possible) so that it is best seen from the signup booth as that is where most judges will be standing. Alternatively you can also move to one extreme or the other of the stadium if you cannot change the design, though that won't be much help for a design that is presented 'backwards'.
These locations are also pinpointed on the Atlas
See also: Pyrotechnics Guide, Pyrotechnics Examples, Pyrotechnics Formulas, Public Pyro Labs