I'm not one to complain about taking dangerous things out of the game or taking the violence out of football, but if the below is an example of something that is a clear violation of the new rule, I'm not sure how you tackle anymore. I mean, yes he landed on the guy's legs, but that's going to happen when you tackle someone to the ground and are trying to hit a moving target. There was no attempt to put full weight on the guy's legs and he wrapped up and brought him down on a bang bang play. It's not like he jumped on top of him and brought him down by putting weight and stress on the guy's knees.
I honestly don't under stand how this is a "hip drop tackle." He hit him in the hips and brought him down. I thought we wanted them to do this to avoid helmet to helmet contact? And the alternative to this kind of tackle is to hit high which is exactly what they wanted them to stop doing up until now. If you can't hit high and you can't hit low, what are you supposed to do? And this looks like a hit in the middle that results in landing on the guy's legs which is now a foul.