What is the optimal Rocket League doubles tactic?

I find when playing ranked doubles (Gold 2) with my friend that we are often out of position and vulnerable to counter-attacks. We alternate between a "one-attacking-one-defending" tactic and a "passing" tactic (where we direct the ball towards either each other or the enemy goal). Watching various streamers doesn't really help because their skill level is so high that they often don't seem to pay attention to positioning tactics but get away with it with really cool touches, jukes, aerial goals and dribbling but for us common folk without thousands of hours in the game what positioning allows for the most time in ball possession while having the ability to save and shoot as much as possible?