Or dip it in kerosene, light it on fire and then throw. The flames will consume the wind (see fire burns oxygen) and render it several times more aerodynamic. Of course the handle can't be on fire - unless you get some asbestos gloves. Definitely try this out first inside, 'cause it might fly too far outside and cause damage to things way farther than you expected.
Or you could tie the machete to a chicken and also glue shards of glass to the chickens feet. Then light and throw said chicken at thine foe. Chickens can get pretty pissed, but they don't always differentiate between thine foe and thineself, so be forewarned.
P.S. The Hammer Fist with a quarter turn used to be my favorite, but started developing blisters, so now go with the straight-up "Stranger" technique... oh sorry, you were talking 'bout throwin' things, my bad.
Dave