Less force is needed to induce rotation. The angle of the mainsheet blocks is pretty good, so when you sheet in, it pushes the boom forward naturally. It actually over rotates easier without all that line running through the blocks in the cascading system. My retrieval line grommet is just off to the left and right behind the halyard pocket with the rotator grommet centered behind the pocket. I simply drilled through the base and added the rotator arm like the 6.0 was, only with the arm facing rearward. The new base actually puts the arm a little further back. At the time I did it, Nacra didn't have the new (or old for that matter) bases available, so thats why I used an old style base.
You may want to add a small piece of spectra to hold the arm up off the tramp like the H20 did.
I do still use the cleats on the boom to lock it over in distance reaching with the chute.