Tried with multicopters nearby and the plugin didn't detect any of them. (minicopters spawned on road)

Ok let me check.  Can you see what the minimum distance is set to in the config file?

It was 500, was not working and I put 1500 just to be sure.

Ok let me try and review the code, a d work out a fix

Spherecast 😁

Cheers whispers, i think im going that route.  It appears that when its reloaded it forgets all the positions and wont re-look.  i've got some working code that stores them all in a file then looks for entities that are destroyed or spawed and updates the file, also updates the file when a mini is dismouted to see if its moved.  However, this is all very intensive soooo - spherecast, I shall rewrite.  Please bear with me - i'm new to this :)