Thanks Sean, it was an excellent video and made me realise I'm turning too many hands into a bluff in certain situation.  I will probably still stick to it because I mostly do it when I don't expect them to think I am bluffing very often (i.e. I have some exploitable justification) but this is def. something I have to consider vs. good players.

Btw just one thing - in example #3 our OBF is about 40%, so can't we have 17 value/12 bluff combos instead of 17/9?  

In the first hand example, you can not only cr a bit over 21 bluff combos (with 50 value combos), but MUCH more than that, maybe even more than 50. Here is the reason:

Starting from the river, our river betting range can and should be constructed in a way that makes him indifferent with his bluffcatchers, i.e. his EV of a call is the same as a fold which is 0, which means that he basically loses the whole pot every time we make a bet and he has a bluffcatcher. Now when we bet the turn, we can construct our range in a way that counts every riverbet as a "value hand", even though it is not an actual value hand, but as stated above, that does not matter vs his bluffcatchers. Therefore, our actual bluff:value ratio shifts more towards bluffs, which leads to a new ratio of 1:1 with common betsizes. The same principle transitions to the flop, leading to a bluff:value ratio of about 2:1.

Now that's the case when our value hands have 100% equity and our bluffs 0% equity and neglecting card removal effects and position. After crunching some more realistic numbers and approximate the disadvantage of being out of position, still without card removal, the bluff:value-raise ratio should be something like 1:1 to 1,5:1, which leads to 50-75 bluff combos in your example.

The fact that we need to be able to defend against a small 3-bet does not directly limit us in the number of bluffs in our raising range, but in our construction of it, which means we need to have enough hands in our check-raise-bluffing range that can profitably call a small 3-bet. On the other hand, it is not easy to pick hands to check-raise-"bluff"/call with, because many or all of such hands are also considered good check-calling hands. Maybe it is best to take some cc-candidates into a check-raise/call-small-reraise-range, like AT with the Ace backdoor-draw. This also enables us to hit more turn cards we otherwise would not have (or rarely) hit after check-raising the turn. One could argue that our range is so strong that we have enough value hands we can easily call a reraise with, but then our cr/call range becomes too strong.

On a side note, I really like your videos the most on RIO, even now with Ben Sulsky on board, as long as he limits himself to sessionreviews and liveplay. Keep up doing the good stuff.