I import all my SnG
hands to ICMizer and let the program look for theoretical mistakes in push/fold situations. I dont do this with MTT hands, because it would be very tedious to create the exact payout structure for each game. But many of the SnGs are On Demand games from PokerStars and ACR Poker, which have a final table very similar to that of larger MTTs.
The way, it works, is, that I import for instance 400 hands from 32-man SnGs on PokerStars, and then the program analyse all the push-fold situations and list them with the biggest theoretical mistakes at the top. I then look at those one by one to see, if the assumptions made by ICMizer about my opponents range is realistic. If not I adjust the range manually and run the analysis again to see, if I still made a mistake.
I have done pretty well in the 32-mans on PokerStars lately, and I think, at least some of this is due to the fact, I now make less mistakes in push/fold situations than I used to, and that most of my opponents are still making. It is important to note though, that ICMizer only look at push/fold situation, so it does not help with postflop decisions.