I use 1/16" braided nylon (so no curl is built in).

I've thrown it by hand (swinging the weight);
used a slingshot;
used a bow and arrow.

What - no potato-gun ??
conduit, hair-spray, and a potato with fishing line.
spray into the conduit (closed at the other end except for a small hole.))
force potato into open end a ways.
put a match to the small hole. ka-pow
I heard it works pretty good, but sounds dangerous.

I use bow-and-arrow - with a fishing arrow.
that arrow is heavy enough to pull the line to the ground