The Widowmaker (FSL) is the supplemental lift for that. Remember that we always have the main work for the main lift (usually PR work or 5's PRO). Then after that we do supplemental work (FSL or SST or SSL or BBB or BBS or nothing at all).
Really the way that I have tweaked the program is that you have 6 things to plug shit into to. The trick is to make sure things compliment each other or at least, not shit all over each other.