Decided during champion select / loading, we will decide whether we're going to invade or not. If we're not invading EVERY person on our team will move to defend and provide living wards at the important crossroads. Use cv to attempt to discover them as normal. If we are invading, purchase quickly and move to the designated invasion positions. I provided 2 illustrations of our invasion tactics. Illustration 1 has us moving to the grass adjacent to mid lane and invading through river while hugging the wall. Hugging the wall is important because unless a defender is all the way forward in the grass they won't be able to see us coming, whereas if we don't hug the wall they can be further back and still have vision. Wait till we're all together before invading further at each spot. At 150 we move in as a team to blue, Hopefully get a kill or two, steal blue, LEAVE 1 SMALL CREEP and if we have the time/health get wolves LEAVING 1 SMALL CREEP.
Invasion 2 is more of an advanced invade. It has us splitting up to different parts along the river. Part of the reason for that is so we all don't get caught together by a cv. If they caught a group they could decide to engage and if they did our positions would have them mostly flanked. The purpose of this invade is to hopefully catch the river guard typically in that nearby grass. If we catch them and kill them it becomes a 4v5 and any attempts to defend after that should be useless and we should have an easy blue steal and possibly further kills.
Internet is worthless right now, will post the pictures later.