3-5-3, 3-3-5, 30 stack?

Coach it's a great defense if you have time to teach it. To my knowledge they are all the same concept with different labels in that all of them feature 6 in the box with outside inverts. My experience with it is that it's great for stopping the outside run, strong on the inside run, strong on the pass, vulnerable to the Power. The key with it is to take full advantage of the stack and use stunts, slants, and blitzes.

The downside to that is it takes a lot of time to teach it to the kids. I've used that defense at that level and if you have time to teach it all, face strong outside and/or passing teams it's very effective. I've since gone back to the 4-4 and I like the 4-4 better because I think it is simpler to teach and rep.