Hi, I enjoyed the video. My thoughts (longer than I intended):
Preflop is obv non-standard but you give good reasoning. I disagree with your emphasis on us being "super deep" since we're only 150bb effective, but I like the idea of repping a stronger preflop range than 66 and therefore inducing mistakes postflop. It's such a simple concept but not one I use enough. It's easy to just get into a preflop "system", forgetting the goal in poker is to get our opponent to make more mistakes than us. Sometimes this means deviating from standard and non GTO strategies (I assume cold calling 66 is slightly GTO negative but I could be wrong) as long as they make more mistakes than us. This is what Isildur is the master of IMO - making mistakes to make his opponents make bigger ones.
You mention he has a linear sizing tell on the flop but don't consider his 4.5x 3bet which is not standard even vs a minraise. Don't you think this strengthens his range?
Flop. You say as a throwaway line we could almost just call to turn/river a set. My instinct was that there's no way that's true - we have ~5% chance of this happening but considering we only need ~24% equity to call that means we need implied odds of like $80 or so when we do make a set. I don't think our implied odds are that good and we probably couldn't call the cbet to setmine profitably but it was a bit closer than I thought. Of course this wasn't the reason for calling but just a small aside that made me think
Turn. Someone mentioned it in the thread about the risk of getting bluffed off our perceived underpairs (88-JJ) makes the float bad. I'm not sure and it depends on the villain. On one hand we have every PP on the turn that is in our range pre given they would always makes 2nd pair on the flop. Are you folding to a turn barrel when a K or Q hits? I think it's a tough spot given he'd barrel his air a large amount of the time. When he checks I agree we should bluff - it's a spot where we rep almost no air and his range is mainly midstrength hands that fold by the river. I love the call-inducing sizing, I know that's something DrGiggy talks about a lot and it makes sense to use it here.
River. Our only real question is "how small can I bet to properly rep top pair?". I like the sizing you went for and agree he might call with AJ (even though it's still only a bluffcatcher).
Overall: the board ran out perfectly for us to execute this bluff - the texture allows us to float the flop and still have an ultra strong perceived range by the river. This won't be the case always so this hand doesn't necessarily justify the preflop call; nevertheless imo it's likely still profitable with the possibility of bluffs combined with flopping sets 150bb deep.
Just a cool example of how profitable misrepping our range can be. Also loved the Galfondesque "take care" at the end.
Thanks for posting, A+ video imo.