See if you can find a Colt hammer shroud. One hole has to be drilled in top of frame(and tapped) and I think upper sideplate screw holds the other screw hole in the shroud. Tip of hammer comes through the shroud,if you ever need to use the SA mode.
As I mentioned on an earlier post,I carried a S&W Bodyguard,and I carried it in a pocket,usually an inside one in a leather flight jacket,so I know where you are coming from in NOT wanting the hammer spur to hang up on the draw(let alone ripping the pocket inside). At least with a shroud,you can use the S.A. for accurate shooting from afar,as I had to do once,with a rabid,or feral dog who was attacking a group of toddlers.
Good Luck,
Bud /forums/images/graemlins/smile.gif