KQs is a MUST Shove If You Only Have 8bb, Any Position
If you told me to shove KQs for 15bb when I just started I would panic because "What do you get call by? Pairs and good Ax, both of which are better than your hand. Shove so much to win so little or be against a better hand"
After hundreds of tournaments and after studying Nash Eq. Push/Fold Ranges I know for a fact that once you fall under a certain stack depth you have to utilize those ranges to maximize your profits.
At 8bb deep UTG KQs is a
must shove, as it has so much equity. In fact it's one of the top ~6% best hands you can have.
At 8bb deep UTG a good shoving range would be: 18.3%, 22+ A7s+ A5s-A4s ATo+ K9s+ KJo+ Q9s+ QJo J9s+ T9s 98s
At 8bb deep on BTN a good shoving range would be: 45.7%, 22+ Ax+ K2s+ K3o+ Q4s+ Q8o+ J7s+ J9o+ T7s+ T9o 96s+ 86s+ 76s 65s
It is wrong to wait for a premium hand at that stack depth as they are very rare, and more often than not you'll be blinded/anted off. Think about it, next two hands you'll lose 1.5bb (SB+BB) plus 0.1bb (or 0.12bb) every hand as a result of antes.
Not only does your stack drop drastically, but your fold equity drops drastically as well.
When you finally get AQ at 3bb deep, don't be surprised to get called by 57o as they have the perfect
odds to do that. And even if you win that hand, which ~35% of the time you won't, you'll be back at ~8bb where you started.
Worse off, often times if you wait until you're completely blinded off, you'll often be put in 3way pots with any two cards, and that's not good.
Also never limp or min raise at that stack depth, unless you're occasionally trapping with a premium (but good players might pick up on that and fold some hands they might have called you shove with.)
To conclude, the folds you get when you shove
+ the equity you have when you get called (flipping against most pairs and most Ax) + blocking of the strongest calling hands make KQs a must shove from any position.
So don't fold your money away, shove!
*If you're near the bubble the ranges change drastically depending how close to the bubble you are and what position you're currently in.
I would recommend you to google for "Nash Push/Fold Ranges" for detailed ranges.