Hello,
I have this setup: a self intersecting geo (as shown in the pic) run through a boolean.
The boolean is set to shatter mode, it successfully cuts the geo but the output groups are pretty useless.
Any idea how to set up the scene so that I can get rid of the selected prims in the picture?

your source geo has reversed normals
put Reverse SOP after skin1 (or after Copy To Points)
and revert all Boolean values to default

Thanks a lot Tomas, helpful as always!
I didn't understand that normals are important for boolean operations.
cheers