Best way to reduce compression ratio?

A lot of good suggestions here I think. If me, I would maybe do what I could to make sure I'm running as cool as I could.....coolant, fuel, intake manifold and engine cold air intake. Then I think I would probably have my distributor closely checked out and then maybe even do a wide-band 02 install to monitor my carb for any lean spots.

But first, I think I'd go out and buy a water/methanol injection setup. I don't see any downside to running it, other than they're about $400 bones. I like compression!