To date there has been no hoplite reenactment groups with enough men and the will to go at it full speed to properly recreate phalanx on phalanx combat. There are reenactors of other periods who have "discovered" the same crowd mechanics that I elucidated below. The following is a video that my friend Giannis Kadoglou found thst shows how large groups of armed and armored men collide. At about 20 seconds into the video you will see a close approximation a clash of shallow phalanxes. Note that as I described, they stand facing their opponents, not side-on as had been widely proposed and now seems generally accepted.