Just put Bowhush and puppies on my bingham-pattern homebuilt recurve. It's kind of a loud shocky bow without some help. I use a Selway quiver for extra mass, but the addition of the bowhush and puppies made it death silent. Just the sound of arrows hitting target.
Regarding placement of the huspuppies, I put them at the 1/3 point of the string. There's a great thread on here about it from years ago, but the physics work out at 1/3 and 1/4 points on the string and as has been said, 1/2" can make a difference.