dunno if anyone's ever mentioned this before, but during last night's workout, i happened to be doing my one-armies at the base of the staircase in my house. i needed to adjust my base hand position, so i put my free hand out on the stairs to brace myself, and felt it nicely. thus, try one-arm pushups with your arm on the stairs, but to your side. it's a pain in the ass to get yourself square enough, but it allows much greater range of motion -- kinda like pushups on parallettes.

here's an ironfist-like picture i made after red5 and i were discussing this earlier today: