Okay, so after a compromise of "get the Speed Booster, then shut it off as soon as I have the Ice Beam," I managed to get it, crushed Crocomire (I should note that I'm doing this on a cheating-bastard run; max Energy, Missiles, Super Missiles, and Power Bombs right off the bat), got to where you made your infamous How The Hell Did He Get Up There run at the Grappling Beam...

and 47 attempts later, I pulled it off! :D Had to drag the whole damned swarm of fire gnats along to do it, but I did!