Jeebas said:So it seems like the basic premise is that your "yeast catcher" is really a "yeast and everything else catcher" and your goal is not so much harvesting the yeast (as I don't see how you would be separating the yeast from the trub after you collect it), just getting the beer off of the trub and yeast and having a clearer beer when kegging?
CORRECT! Kinda
But yeast can still be harvested from the first dumping after fermentation is complete.
Not any different than collecting the yeast from the bottom of an Ale Pail after fermentation. Check out the wiki on yeast washing.
It makes the entire secondary process much easier also; Once the first dumping the clearing process begins in the yeast/shrub catcher
Cheers