Firstly, 5-3 or 5-1, not 5-2.

Secondly, OpenStealth uses your ship to collect Palladium, so everyone can see you, it doesn't control your PET.
What you can do, is cloak, sit on the side of the mist (palladium field), activate your PET and activate 'Auto-resource collector', and use a program like AutoHotKey, to click on your screen every 10 minutes, so you don't log out automatically.
I would only recommend this if you have lots of radar protocols.