I wrap when the color is just a tad lighter than what I want to finish with, my cooks are generally done with little regard to the stall, other than for timing. What I mean by that, is that since I am cooking around 280F to 300F, I ignore the stall. I figure on a total 8 hour cook time, and work with that. The wrapping is more about color and keeping a little bit of moist environment around the meat.
I'm feeling bearish, and I'm packing a Wusthof Grand Brisket slicer from MABA
"perhaps...but then again...maybe not..."