David,
Yes it is, indeed, hands free. You may have to play with it a bit to get it positioned just right but I've used it 2 years now and I won't go without it now. Nice to be able to grunt and not put a deer on edge thinking there's a sheep in a tree while at full draw

I love mine and recommend it highly. Another nice part about the inhale is that it won't freeze like every other reed based grunt I've used in the Michigan late season.

Paul makes a good point as well...I only use this if they're hustling and I don't thin I'll get a second chance. I'd rather them be completely at ease and reduce the "string jumping factor" as much as possible but the Bowgrunter Plus can be extremely quiet as well and attached around the back...they can't quiet place where it came from even at 10-15 yards.

Like I said...they look right through you thinking it came from 30-40 yards away.