I think knowing the terrain in and out eventually will help as well, I've headed to spawn points where I see a lot of teammates on the map but Oh no! I'm underneath it and it's just me and 5 people from an enemy team! I also think I know that choke point Blubbers is talking about (any chance of you transferring to Diabolos and joining Adders btw you'd be very welcome here ) and had fun defending it against large numbers with just me and one other. Threw up a shadowflare to deter people from walking in, and used the rocks to LoS any other casters trying to get me from the other side.