How many hands do you have at 2NL? Even without HUD you must have some idea.
My DB shows massive profits when stacking off with KK/AA and slight profits with AK, QQ (and some of the losses were avoidable but for my lack of paying attention to who was doing the 4bet). Still, this helps get money from regs who do have HUDs, trust me nobody gives money to nits who only stack off AA.
Yes you are always getting a call from these, so what?
Let me get this straight - you plan to give away your stack to KK, AA if the flop doesn't show A or K and you think this is +EV because you maybe get money (which is usually just the cbet against people with a brain) from AK to compensate? This is better than getting it in preflop how exactly?
I think you should pay attention to others (especially regs) and try to see what ranges other people have for preflop stackoffs. Loads of aggrofish stack off random crap and you need to know who they are. Also, nits only 3bet/4bet AA or KK+ and again, know who they are and see if you have odds
to setmine (you don't need much since they never fold post flop).
This guy is an aggrofish obviously (stacking off OTF with air) and I doubt his preflop stackoff range is so tight he doesn't give up value to QQ+/AK range.
In 2NL fish massively outnumber winning regs BTW.
P.S. What does "buying" have with having a HUD? I used the trial version until I earned enough to buy a license (it took less than a month BTW).