In the one example you provided, you pushed all in with overs and a flush draw. In a bubble situation I think it's much more profitable to push with a made hand rather than a drawing hand. If you've made the flush and can get them all in your are only dodging a few outs rather than trying to hit some outs. I've found that when the bubble approaches and you are close to the bubble, you need to tighten up some and press hard with your good cards preflop. Notice I'm not saying push all in, but rather press hard with your cards. If you hit the flop, then push. Too many people are willing to commit their buy in's to a draw, after playing a few hours to get there. Besides what you do, there are others that are playing and could misread a hand and make a mistake, especially in the bigger fields. You can be the last person and end up cashing as 3 or 4 other short stacks bust out. I know this because I've done it multiple times. Hope this helps.