Hi there! 

I have this plugin installed on my PvE servers, and for the most part, it works amazing! However, players often use the auto turret to help them tackle bosses, or other npcs.

The issue is:

If the player is standing between the auto turret and the npc that the turret is targeting, the player will receive damage. I am using True PVE  to prevent damage to players unless within specific zones. 

Is it possibe to include a check in the turret targeting system to stop shooting if an authed player is within its line of sight? 

This sounds like something a PvE plugin needs to solve. PvE plugins tend to affect not only targeting but also damage application. One factor that may be at play here is that the turret on minicopters doesn't have an OwnerID, so PvE damage controllers may be handling it different. Regardless of the exact reason, PvE plugins are the best place to handle this. If the maintainer of your PvE plugin needs assistance or hooks/APIs from MiniCopterOptions, they can discuss it with me.