Looking for a plugin that will alert me if players are teaming. I know of group limits. Currently use admin radar, admin hammer, and just found team logging. This is for RUST.

Maybe Teams Logger?

Yep, I downloaded that earlier today, I guess it will help catch the less intelligent ones.

I am not sure if can post this here buy anyway... check this video... 
https://www.youtube.com/watch?v=jMOcBADiAp0

1. Team Limit (vanilla command) will make impossible for players to join in a team if you set to 1 or 0
2. For all people playing in the group without being in a rust team and bypass 1. you can use MaxCupboardAuths and limit Tc's to allow only 1 authorization on them...
3. Crafting controller... that's cleaver and never thought about it - you can blacklist crafting of keys and codelocks so people won't be able to use the base if do not own the keylock... teamers will again bypass this and ask everytime the owner of the base to open the door but you will save a lot of work anyways.

Thanks for the suggestions.