Mornin' TaktEZ.
You have cooked long enough to know that learnin' to cook the product is 95% of a good cook.
That said,there are some minor things we do ,to pick up a couple more percent.
It is fun to experiment,with injections,rubs,etc.
Sometimes, the results are good.
Be aware, that just as we don't put heavy rubs on ribs overnight,because we might cure and make them hammy,a vinegar injection ,too many hrs in advance,can pickle and break down a butt, to mushy.