Kent Christiansen made an action "KentC Skin Fix" "Paint Soft Skin" which helps you do as you are describing.. there are three different ways in the action to do skin fixes.. the "Paint Soft Skin" is the one you are trying to emulate.. it can be found here:
http://www.atncentral.com/quicklinks.htm
scroll down to Kent's Skin fix V.1... tis in Zip format.. unzip it and add the action to the action pallet by dragging it there..
My personal feeling is it is a lot better to learn how to instead of relying on actions... BUT they can be a useful tool to help learn if you study the mechanism of how the action works