I agree with Vinny, I don't trim fat unless it is hard and yellow, or over 1/2" thick. It just isn't necessary. I also rarely buy brisket smaller than 6-7 pounds, as the smaller pieces don't cook up as nicely. Also, a tough brisket usually means under-cooked.
me: I don't drink anymore
Yelonutz: me either, but, then again, I don't drink any less