Lets call the main man in himself to answer this one........yoyoyo @CrazyCookie

Stop focussing on GTO is the easy answer. I called it GTO but really it should be balanced. Poker snowie, which is pretty good at guiding you through building balanced strategies, even if the strategy it has isn't winning much, suggest we bluff about 2/3 otf 50% OTT and 1/3 OTR.

This also makes sense as otf we have more equity with our bluffs with two carda to come and villains range is wider so will fold more. OTT we have less equity if we haven't improve and villains range is narrower.

When studying this way i pretty much take my range and say right I'm going to value bet x% of my range and can therefore have 2x that as bluffs OTF. I then take my best semi bluffs, FD, SD over cards, GS btm pair live kicker. I then take my next best bluffs which will block villains calling range. Kq blocks KT and qt on a t43 and has two over cards.

This means that OTT I can keep value betting my value range (assuming no change in board texture) I can keep bluffing with some of my semibluffs and give up with my air hands. OTR I will then bet my value hands and enough bluffs to build my range. The reason I do this is because the EV if checking a bluff is close to or exactly 0 OTR and given I have value hands off we can include bluffs to win the pot more often.

Don't get into the "I bet this ammount with this many value hands and this many bluffs so his call is not +EV." We can't do it and never will be able to as it would mean we have info from villain we don't have and that we can calculate all of this plus equity advantages of betting ranges and calling ranges. Not possible for humans

Also you miss out on a tonne of value!!

Thank you for clarifying

My example is was way to simple to be applied OTF and OTT for the reasons you mentioned, I guess it can only be applied OTR, so it makes sense to bluff about 1/3 bluffs there as you say.

Also just remember that GTO should really only be used if you can't exploit villain. So in the majority, the vast vast majority, of spots you shouldn't use it