I'm not sure if this would be helpful to folks here. Hell, I'm not sure that this hasn't been posted a dozen times already. But I wish I'd thought of this sooner.
This heat shield a pain. It is held in place with three bolts. Two of these bolts are easy to reach. One of them is damn near impossible. It is directly under one of the small heater hoses on the firewall. You CANNOT get your hand in there without shoving said heater hoses all around and scraping your knuckles on something. I hate it. I mean, I love the shield, but I hate that one hidden bolt.
I sliced a small notch out of the heat shield. You can see it above. One bolt hole is unmodified. One has a notch. So now I can just slide the shield under the hidden bolt. 2 minutes of work.
Now I just leave the bolt in place after loosening it enough to slide the shield on or off. I can get to that bolt with a Gearwrench slid under from in front of the brake booster. I never have to shove my hand between the heater hoses again.
I also replaced all of my FM-supplied imperial bolts with spare OEM metric ones. All 3 heat shield bolts are now stock ones with 10mm heads. That small upgrade saved a bit of work and fumbling for wrenches.
Anyone with an FM2 should do this mod.