In my experience, learning more about the map, and the enemy ships playstyle makes it a lot easier to fight against Radar. I usually never have to worry about Radar because I know where they’re going to be placed and how far they extend out. It’s more of a matter of figuring out the best places for those ships to go and working around it. I contest caps a lot of times as a DD, and I never really die to Radar. Yes, occasionally I’ll suffer because of it, but it’ll never be the main cause of my death.