My personal util strategy goes like this.

I dont "fine tweak" each month,  and thus dont worry about achieving max util pts each month.  If I dont plan to app for new credit within a few months, I dont go to that level of monthly aggravation.

But I keep two things in mind when letting util creep up on a card.  One, keep it low enough so that if and when I do have a need to app for credit and need my max score, my util is in the ballpark so that I can get it under 10%.  And, two, I have concern that keeping a regular balance on a card that gets above, say 30% or so, may trigger an internal review by the creditor, and a possible credit limit decrease.  So, I look at it both from the point of view of what I may have to do, and what the credtior could possibly do.

The "overall below 10%, none over 9%, half not reporting a balance" mantra is sound, but not my monthly mantra.