You only need 1 layer of paper if you use to more you might as well use foil. Paper is absorbent you aint gonna get get much aus jus if any. If the paper got soggy enough to rip out you wrapped it to soon. For the record It don't Steam OR Braise in the paper because it is porous unlike Foil.
Once you wrap your brisket in the BP take a knife and make a few small slits in the paper to probe through.
I'm a Proxy Vegetarian> Cows eat grass & I eat cows.