For those not comfortable lowering the hammer with thumb-only, or using the pinch method, try my method. What I do is this:
1) RAMI is loaded up, slide racked, and ends up cocked.
2) Insert the middle-bone of your left thumb (or joint, or thumb, whatever is more comfortable for you) between hammer and slide (so that it contacts the hammer) . This prevents the hammer from falling forward, and could be considered a second firing pin block.
3) Press and immediately release the trigger. The hammer moves out of the sear engagement and now rests on your thumb bone (after having moved just a tiny bit). The firing pin block was only deactivated during that split second you pressed the trigger. Now that the trigger is released again, the gun's firing pin block is active again.
4) Now remove the thumb upwards to let the hammer slide into the half-cock position.
People always tell my that this is a lame method, and I should practice using the thumb-on-hammer method instead. My response is that I believe this my method is safer since the hammer is actually blocked by the thumb, and there is no way for the hammer to slip off the thumb. This method works better for me since it's fast, safe and fool^H^H^H^Hslip-proof, which is important for situations where you might be under stress or tired or for some other reason have not the proper focus for hammer-on-thumb control.
The draw-back is that you have to use both hands, whereas with practice, the hammer-on-thumb decocking could be done one-handed.
Note that this method (as least in my opinion) works very well on the RAMI due to the hammer and slide width and contours. It doesn't work quite as comfortable on 75's, mainly due to the slimmer hammer, but can still be done.