This is another remix of the Omega Boomerang, using the "bent stick" technique shown in the video below. Other than in the Keyhole Omega Boomerang, this one just has a slightly tighter elbow angle without changing the overall shape too much.
The one I have printed so far at 90% size has a surprisingly large range (45-50 meters, I'd guess) with an easy flick throw.
Treating the boomerang as a straight stick with an airfoil that is deformed along a curve makes it very easy to manipulate the overall shape without the need to push around a lot of individual vertices.
Basically, you just need to nudge around two of the control points of the curve that defines the overall shape.The author marked this model as their own original creation. Imported from Thingiverse.