Only problem with that kinda of data WK is that from what I have observed you have to look much more into the stealer, and situation. Just looking at raw Att & Succ rate gives you very skewed numbers.
Essentially you have to look, IMO at a team's entire on base log through the season. Make separate logs for each runner then keep track of every time that runner was on 1st with 2nd base open and record: Pitcher's HLD, Catchar's ARM, score, inning, # of outs, outcome of each time OB, OPS of hitter on deck and in Hole (and you assume that the runner is a held -if a * of course). My feeling is that after you have tabulated that info from every time the runner was on base, then when you determine the runners overall chances of getting lead and combine that with the battery/held penalty/bonus you can determine an overall Succ. Pct. of stealing succesfully and the obvious % with lead and % w/o lead. Then once you have all that info ready you will start seeing some pattern on when HAL gives the green light, but remember that for every time the runner was on base you have to make sure that the right pitcher's HLD/ catcher's ARM was taken into account (in case its an RP or 2nd C). That is with what Succ. % and in what situations HAL gives it a go. That's all the info that you need, whether or not it was succesful IMO is a bit irrelevant as it's just at the mercy of the roll, some really bad luck will skew things.
Anyway, you just need to do that wth one team and all the good stealers to have plenty of info, you don't need 100 teams I am currently doing so with the team I posted in the Hanley Ramirez thread. it takes time of curse but that's where the fun is, eh?
Once again, just my opinion on this.
Either way, gathering info/data is always cool, if people still want to share their goodies it would be great.
C2