I think one of the best reasons to 3bet AK (especially if you are playing zoom) is that people are calling so wide at the moment (I play NL5 so basing my view on this - higher stakes will obviously be different). Even regs can't play 3bet pots well at these stakes without the initiative, many just give up on the flop and it will still be +EV even when they do stack you with their sets.

against bad callers you can punish them alot more after you hit as opposed to better players so there may be less incentive to raising early. because you get the valueof the hand anyway on the times you hit, rather than having to get it early by gambling more.

of course if I put them on it why wouldnt I...No A or K I check raise !

If we're mostly 3-betting with 100bb+ effective stacks, at what 4-bet% for villain are we folding and what % are we shoving/calling a shove?

how do u know they have AK and not AA or KK?

Timing tells, soul read tc

This is where I used to have heaps of trouble, especially live when I was card dead for hours. Luckily I found ways to overcome it.

Against the nits who will only raise or fold to your 3b, I only 3b KK+ and any Ax/Kx/Qx/Jx suited that isn't a broadway hand. I will flat with most other stronger hands that you would not want the villain to 4b or fold to, such as AK/TT-QQ and open this up the later position the raise is from.

The KK+ is obv your stacking off range and the Ax/Kx/Qx/Jx hands are the air with blockers that cancel out a few hands he can have to 4b with, and you obv just muck if he does 4b. The range is extremely polarized though so I try not to over abuse it.