I play zoom poker & 90% of opponents are unknown with population tendencies being 20/16 according to hem2 opponents tab. Currently i open 33.03% of hands from the sb & defend about 1/3 of that vs 3bets. I also defend 1/3 of the time vs 3bet; 77+, A2s+, qjs+, AJo+, using a combination of calling oop & mostly 4betting as value/blockers. My 4bet range is close to 50/50 between value/blocker bluffs & my 4bet range is unexploitable. I can't fathom how to widen my range as a default vs population without being severely unbalanced, & even then i would just be adding 4bet bluffing hands & have like a 1:3 value to bluff 4bet range which seems bad. So yea, help & range anlysis would be awesome, would love to hear how you guys approach the sb open & how you defend vs population who 3bet you, seems like the best regs in zoom open 50-60% but no clue how to defend vs 3bet if i open it up. .