Launching the boomerang:

Boomerang is launched close to upright (vertical), 45^o to the right of the wind* and aimed upward at 5^o (just above horizon). The boomerang is gripped firmly with the flat side away (to the right*) and cocked back as far as comfortable to impart maximum spin.

*Left handed throwers should use a left handed boomerang and throw 45^o to the left of the wind. The boomerang should be held with the falt side to the left.