I'm only a home cook, but my grandma taught me NOT to press the solids because she felt that the tiny bits of meat/fat would make the stock cloudy and "gunky." (Also, boiling was a no-no for the same reasons.) Over the years I've read both opinions and tried it both ways. My conclusion was not to press because every time I have, I get an opaque murk. The fine solids will settle to the bottom of a container when chilled, but the least disturbance sends them floating around again. The other thing I've noticed is that even with a serious chilling and defatting, any sauces I've tried to make came out somewhat gelatinous as they'd start to cool. With a nice clear stock that's never happened. So, if we're allowed, I vote for gentle draining and no pressing. Oh, I made a soup today...we had The Turkey Dinner last weekend because my niece was visiting. I had a turkey breast which I trimmed closely and saved some nice pieces of white meat. The carcass went into the pot this afternoon, simmered with spring water, shallots, carrots, carrot greens, a few allspice berries, bay leaf and whole coriander. I strained it after 4 hours, then added wild rice (Lundberg's gourmet mix, rinsed) and fresh carrots, cooked that for 30 minutes, then added the reserved white meat. Even with the rice, the broth remained quite clear, and was a tasty dinner with cheese biscuits and a salad.