Week ten? If you'll sit down and do an honest, objective assessment of the benefits you gained with the amount of time spent, I will guarantee you could have found another more important area to improve that would have made your players more skilled and prepared and your team much better. And the improvements would have arrived sooner than week ten.
Man, if you take the best tackling team in sixman against a team with finely tuned skill players, with all else being equal--talent,quickness, strength, coaching, philosophy, motivation--the skilled team will win almost every time. Think about it. No NFL team was better at fundamental football than the Vince Lombardi Green Bay Packers of the 1960s. And generally speaking those teams throughout the '60s and early '70s were superior in tackling (& blking) than most of the teams since then. Even so, can you imagine those teams facing a skilled team like the Patriots, the '90s Cowboys or the 1980s Forty-niners. It would be a contest for about a half, then the modern defensive schemes and passing attacks would beat them handily. What can good tackling do against an air attack where the ball skips over, around and through the first and often second levels of defenders? And in six-man your talking about working on something that for the most part occurs on or within three yards of the LOS. You better have something more valuable in your pocket.
I have been in situations where my team simply had no talent capable of developing a high level of skills, so I focused sometimes half my practices on blocking and tackling. But you know what I discovered, they couldn't do that either. However, on all of those teams I usually had one player who could tackle well, but he could also execute high level skills. That single player on those teams could do both equally well. So, I was faced with a choice of spending large amounts of time and energy on either blocking and tackling or skill. I eventually figured out, with a lot of outside help, that skill development payed better than merely blocking and tackling. We still did both, but I was wasting too much of my time. So, we started working on open offensive sets that even though they required several skills, the kids welcomed the challenge more than they ever did the endless blk. and tackle work. And even though we didn't win any more games, the kids felt like they could threaten their opponents more with scoring points than just making a tackle now and then.
It's just a matter of stressing whatever your style is, right? That's what they say...
If it is true that fundamentals can be improved, doesn't it make more sense to develop those skills like passing, catching and route execution which can nullify good tackling.
One more point, the 1999 and 2000 PC panthers were the best blocking teams I have ever seen, even so, they could not win state until they developed a state-of-the-art passing attack for the 2000 campaign. It was that air attack that forced Highland to utilize a 3-1-2 defense most of the game to minimize PCs aerial assualt. But in doing so the running game benefitted. Had PC stayed with the 1999 passing philosopy, which was pretty salty too, Highland would have won state, not PC. It was the threat of the passing skills that moved the ball down the field for them, and enabled the seal blocking to have more success.