Please bear in mind that I'm a regfish in cash PLO and STTs (so maybe I'm overestimating the bubble effect) but a total fish in PLO MTTs, so your best bet is to create a study group with regs of your games like centebakkie, SlimyF, bizfishpro...
Meanwhile, you can summon
this or
this free MTT ICM calculator to see how big an equity you should have vs opponent's range to stack off profitably near the bubble.
I haven't run calculations but I really suspect (basing on the data for Stars 180-mans) that near the bubble and the final table bubble, you should have about 55% (instead of 44% needed in cash games) against opponent's range to 3b-shove profitably.
Note that significantly bigger stacks will open like in cash (or wider if they're competent) and call you light because the bubble factor is less to significant to them. A bad news is that QQ54ss has only 55% vs a top 50% range, making it a $-breakeven 3b-shove, and even a fold if you're OOP and are deeper than 10 bb (i.e. would have a significant flop SPR). Because of the bubble factor, the dominance isn't as big as you might think.
So I wouldn't 3b light against bigger stacks but would pick spots where I can press shorter ones.
Last edited by coon74; 04-04-2014 at 07:04 PM.