I am assuming so you can 4-bet with other hands as well and you opponents will not be able to tell the difference.

If you ALWAYS 4bet ALL-IN with AK,AA,KK your opponents can 3-bet you and know always when to fold. By just making a normal to a little smaller than normal 4 bet you can do it with a much wider range assuming you do it also with AA-KK..

I play pretty LAG and is often seen as being out of line for 6-max, and here is a sweet tip:

- coldcall with AK some of the time both oop and in posi, you win when it comes A/K and you often win when it comes 876 and you're in position. I can't tell you how many times I've stacked a TAG's dominated hand whereas if I had've 3bet they would do the TAG thing and fold KT-AQo.

- as above, but with QQ+. You figure out the right time to do it. It only has to be done once to stack a reg opponent and that stuff will stick in the mind. Creates fear/confusion which creates sweet stealing opportunities.

- 4 and 5bet shove with a wider range, this requires rapid and logical adjustments to how your opponent is adjusting to you. Sometimes you will valuestack yourself, but if you play smart it'll definitely help your winrate. There are also tons more born nit regs at lower limits who are basically incapable of calling with less than QQ or KK vs a preflop allin for 100+bb and tons more who'll insta-stack off iwth JJ for 200bb vs your overbet shove if you get them angry enough.

If I open raise and 3 bet, my 4-bet is only 29% of my stack. If the flop is great for their range and terrible for my hand, I will save the last 71% thank you very much!