I checked to see if APC is enabled on HostGator shared. It's not. I asked if they could enable it. NOPE. Have to upgrade to VPS or dedicated. I told them I didn't want to go to that extreme since so many HG customers are complaining about the speed. I asked them if their VPS/Dedicated was still slower than shared. He said "yes, because the shared servers are much more powerful machines than the other vps/dedicated solutions.
They told me that suPHP is used over APC for "security reasons."
I guess for now, while on HG, I'm out of luck.