Not bad, I usually hit around 75% give or take a point or two. Usually mashing around 152. I have done 150 and it was too thin, 156 and it was too heavy. I've varied the hop additions, not variety though. My favorite is how its listed.
Very simple, quick, tasty. I add this as a second brew on days when I am not time constricted. I can brew a batch early and do this while I've got a batch boiling. Keeps the wife happy.
The no sparge has become my staple technique here now. It's just too easy, I don't have to worry about sparge water and temps... I just set my rims box and let it go 45 min, then set it for mashout and let it go another 15-20 then drain to the kettle. comes out nice and clear.