In Peter Clarke's From the Ground Up Course, he discusses Polarized Strategies. It is not clear to me how to decide the ratio of how much we bluff in these scenarios vs the the frequency in which we bet for value. Should we as a baseline, bluff at a frequency that combined with our bet size, would make the opponent indifferent to calling or folding based on our ratio of bluff to value, and then adjust based on the tendencies of the player or pool?

I also understand that many of our bluffs on early streets still have significant equity when called, so should we not consider these as pure bluffs and instead try to add some low equity hands that block value into our bluffing range instead?