Running a 2017 S97 and a 2014 FD75 for the first time this fall. I ran the head previously on a MF 9790. I never used the AHHC on the Massey, just went return to cut and let the head float. We have pretty flat ground here in SE MN. Is this the recommended way to run it on the S97 or do you guys run the AHHC in addition to the mechanical float features of the FD 75?