I picked this up a few weeks ago but had not surfed it until a few days ago.
It is a PU/poly 6'0 x 20.25 x 2.5 (33.25l) It feels a like a little less volume than this. I normally ride a VS Shadow and a VS Time Machine. Both are EPS.
I rode it in shoulder to head with occasional overhead reef break with the mayhem large quads. The board is quite pulled in at both ends with more rocker throughout and feels considerably smaller than my 5'11 Shadow. The rails are also foiled throughout with the nose and tail being very thin. Most of the volume is around the center of the board. It gets into waves easily and has a good turn of speed when you put it in the pocket. On the flatter sections it does slow down a little but is quick to respond to a pump or a steep section of the wave.
The most noticeable difference from my other boards is that it sits down further in the water than the epoxy boards, which tend to get pushed out in front with more powerful surf. It also has a really curvy shape that can turn very tight and go vertically easily. The rears are straight and placed closer to the center which probably gives it a more thruster type feel.
After a couple of waves I had some really good tight turns under the lip with the tail releasing easily. All in all I was very happy with the board and cannot wait to get it into some bigger waves and try it as a 3 fin. I got this as a mid range board for Shoulder to DOH waves with push when the Shadow is just a little to floaty and fast. This is my 3rd Mayhem and feel like it may be the best for me. Thanks MB.
Finally. I don't think this is a "quiver killer" at all. The board appears to need a little juice to work well and cannot compete in the small stuff with a lazyboy or PJ type board or even the Shadow.