as to your guess, i am one of the ppl that in LP v blinds ( me LP) i would 4bet/fold TT/JJ and w/ some freqvency even AK/QQ. this is another problem i have vs unknowns.

w/ ppl i have history/big hands sample, things are a little different but not much. there i need to bluff more to induce spew, something like if in a spot they need 30% to call, i should bluff 25% to induce theyr spew and still keep a profitable range in that spot.