I always hark back to what our previous Premiership defences talked about & that was playing a lot of games together as a unit & building trust in team mates so they didn't even have to think. Even the most challenging of circumstances they could work their way out of trouble.
This holds true not just for the defenders, but both the mid and forward groups as well, then add to that the connection and understanding that the defence has with the mids and the mids with the forwards for the field transition process. Much of the games are played virtually by instinct these days, that's why coaches rarely make much in the way of tactical moves on game day, it *smile* with the positioning, structure n system that they drill over and over again.
We got the pleasure of watching what happens when massive injuries rip apart any possibility of properly initiating any structures and systems all year long. We were basically forced to use every player on our senior list while having only 1 player play the entire season. Even a Carlscum has wobbled n virtually fallen out of flag contention because of their injury issues, just barely arsed their spot into the finals. Smelbourne, niggles to Gawn, Brayshaw gone from their mid while Clarry has struggled with his issues n then Peetracca = massive mid field problems, chuck in some Lever n May injuries n the years turned to *smile*.
Structure's a little bit wonky, players aren't quite in the spot they're supposed to be in, players hesitate for a half second because someone's stagnant when they should be moving, players begin to lose a little trust in what they're supposed to be doing. There's a hundred things can go wrong n it doesn't take much to end up looking fairly incompetent in a hurry.
All the coaches have their preferred game styles that they drill down into their players over a few years and then if it's a little new or innovative and most importantly they have the overall talent and discipline to execute properly. They play finals n chase flags.
Moggies high speed n control flicking the ball around for 500 possessions per game.
Clarko's cluster to strangle and pinch a flag, then his old fashioned hard nut horrible hawks, with a batch of premium players.
Lyon's control system that couldn't quite get him a flag with the Saints ( good list ) never worked well at the Frockers ( moderate list )
Dimma's chaos theory, just get it forward n lock it in.
Mitchell n whatever he's got the Hawkers doing these days, all of a sudden it's clicked n they're barn storming this year