Sorry for the wait,
My personal defense of choice is an odd man front... I have used it in the past, and it is what I know best, to me a 3 man DL with 8 stand up players puts a lot of speed on the field, allows you to drop 8 in coverage easily, and lets you bring pressure from anywhere.
I am a big believer in a 3 man line because you can line them up and single gap them, you can 2 gap them, or you can do my favorite, and slant them. I love slanting (especially when all you have is wrestler builds, no big strong 300 lb kids to plug gaps up) because you can really create problems for the OL by messing with their rules and confusing them. As an OL coach I would much rather face a DL that plays the gap they line up in, compared to one who is constantly slanting on me.
3-4 vs 3-5
Now many people debate these 2 defenses, but I say stop looking at # - # and equating that to some master scheme and just look at what you are in, if a 3-4 or a 3-5 is your front, then that front is determined by the coverage you choose to run ( see my earlier post on coverage determining front).
I do not see myself as a 3-4 guy, or a 3-5 guy... I am both. When I want to run a 2 high coverage, my front becomes a 3-4, when I walk my SS down to play 1 or 3, now I have made my front into a 3-5.
I have to admit that the more I learn about 2 high coverages the more I like it, but I have traditionally been a 1 high coach, and based out of cover 1 and 3. I still feel more comfortable teaching things this way so I will stick to discussing what I would be in most of the time which is (by walking my SS down ) a 3-5 front.
The best little nugget I got from going to a clinic last weekend was from a 3-5 coach from a HS in Illinois. Schematically everything he had was already in my playbook (even though any of you who have seen me post on coachhuey can tell I prefer offense and want to OC, I have a defensive playbook ready at all times should I land a DC job somewhere)
But what I got from him was I loved how he called his blitzes. It was ridiculously simple, so simple that I questioned how in the heck I hadn't already thought of it.
His DL movement and style was the same as mine, a lot of slanting. He paired his 3-3 stack and each DL was married to a stack LB, meaning M and NT always had both A gaps, DE and OLB always had B and C gaps, this was exactly how I had my defense set up.
What got me was how he called which of the 5 LBS (3 stack LBs + 2 SS types) would be blitzing
He simply numbered them from left to right 1-2-3-4-5...
So when he wanted to blitz, say he wanted the Left SS and MLB to blitz, he would call 13 attack. This told the #1 and #3 LBs to blitz.
#1 and #5 (the SS's) always rush off the edge
#3 would be the MLB, he knows he is blitzing, and he knows he and the NT have both A gaps. So if he knows the NT is slanting to to let's say the right A Gap, he blitzes the left A Gap.
Since Each LB is married to another player and can only blitz, at most 2 different gaps, once his # attack is called he just has to make sure he goes opposite of which way his DL is slanting.
This definitely beats my way, my playbook used the old school things I had learned, named blitzes for each Lb and Gap, now I just feel that way is old, dead, and inefficient.
So a typical play call might be something like Slant Strong -24 Attack -Cover 3
Simple way of informing your DL which way to slant, which LBs are blitzing and where, and your coverage
He used, just as I would, a wristband for his MLB, so he simply had to yell out which number to call, MLB would use the wristcoach and tell the defense the play. I think this way is simple because you never get caught up making the wrong front/slant/blitz/coverage call and putting yourself in a bind. I know a lot of guys still signal things in, but if you make a mistake in the heat of the moment you can kill yourself. Making the wristband early in the week allows you to double triple quadruple check it out to make sure you have everything covered, and you can use it all week in practice to as another test, making sure everything you have called on a given play fits together properly.
This system of calling blitzers is easy, I can't think of any thing simpler. This can easily be translated when moving from 3-5 to a 3-4. We drop one designated SS back giving us a 2 high shell. Now we are in a true 3-4 front, the LBs will now unstack, and even up into a traditional 3-4 look, but they will retain their #s, so that there is no new learning. So say our #1 LB is our better coverage SS, he is our adjuster, moving between 3-4 and 3-5 defense. He is always our number 1, and will always align on the defense's left side when we walk him up into the 3-5. Continuing from left to right each of the reaming backers are numbers 2-3-4-5. So when we drop #1 back into a 2 high look , the other 4 LBs retain their LB blitz #.
Now even when we go 2 high, none of the front rules and blitzes have to change.
This gives us a multitude of looks we can possibly give an offense.
There is no perfect defense, their are justifications for every defense. I believe this defense possesses a sound way of defending every gap, which has been and always will be the name of the game in high school defense.
I am not trying to sell everyone on running any specific defense, I really just wanted to share this simple, efficient system for conveying blitzes to your defense. This system can be used in any defensive system, it is a matter of assigning possible gaps to defenders, and numbering your potential blitzers. This can easily be done out of a 4 man front look, numbering your 3 or 4 LBs, and have them understanding what gap they are responsible for depending on DL alignment.
Hope this makes sense and wasn't all incoherent rambling, I am typing this while currently in a bit of a food coma.
Please ask questions, leave comments for feedback, comment on anything you would like to see me post on, I really want to make this a better blog, and I need YOUR guys' help!