The Trivenger is a very acurate and easy to thorw boomerang.

The flight is very stable, with a fairly high trajectory. The bommerang brakes very well on the return which allows it to be easily caught, even with a finger.
If you are left-handed like me, you have to make the file symmetric in the slicer.
For a good result in it is imperative to watch tutorials on youtube for example.
You'll find the sdlprt solidworks 2019 file

https://youtu.be/UGlVkEqy9lY