i mounted mine near the windscreen wiper motor in the corner of the engine bay...
i didn't block anything off, i simply routed the exit pipe from the cam covers to the catch can, then the pipe from the exit of the catch can went to the pipe that leads to the intake
I simply filled the catch can with a stocking and a kitchen scourer to create turbulent airflow
at idle, the PCV still opens, but on boost, the PCV is closed and any oil will be caught buy the can
cheers,
Warren