I agree with silentassasan. I think that a "floating" head would penetrate better than one that is spinning, especially in a fixed blade. Think about it, when twisting and then hitting an object the blades would seem to have a tendency to grab the hide and torque the entire arrow. If you stick a broom handle into a fan, the whole fan wantst to flop over (a little trick I learned as a kid). Whereas a non-spinning broadhead should be able to use all of it's forward momentum to plunge farther/faster through the hide and entrails. Just my thinking though. If anyone comes up with a "floating" or non-rotating broadhead... I called it first and I want my monthly check!

Handles, isn't that the theory behind the NAP razorbacks?

I remember a head that used that theory about twenty years ago. I can't remember the name though. And the concept didn't work as well as they thought for some reason.