There Is No Such Thing as a Maniac: Adjusting to PLO Player Types
The most expensive label in poker is "maniac". Players lump every aggressive opponent into it and apply one generic counter - call down lighter - when the aggression actually comes in three distinct profiles that demand close to opposite adjustments. Misread which one you face and your adjustment is the leak.
This is a strategy piece, not a data piece: the numbers on this site come from solves and simulations, and reads come from showdowns. What follows is the classification that makes the showdowns you see convert into money.
The three aggression profiles
The first profile raises big with too many hands in both directions: over-bluffs and over-values at once. Against this player the winning move is mostly to relax. Play tight, bet your strong hands plainly, and stop trying to out-maneuver someone who has removed maneuvering from the game. Your polarized bets should be hands that welcome a raise, because a raise is coming.
The second profile rams money in with strong hands and almost never bluffs - aggressive in volume, honest in content. Against this one, the "he's crazy, I call" adjustment burns money at the maximum rate. Fold unless you beat a real share of their value range, bet-fold thinner value than feels natural, and move your bluffing to the spots where they merely call, because a range that always raises its strength is weak when it flats.
The third profile is the compulsive bluffer, the only one of the three that the folk counter actually fits. Give them rope: check hands you would normally bet, bet small where they read small as weak, and protect the medium-strength hands you do not want blown off equity. Their mistake only pays you if you leave them room to make it.
The default before you know
Until showdowns reveal which profile you face, play as if you will be raised too often: tighter entries, polarized bets, and a bias toward hands that are comfortable getting it in. That default loses the least against all three profiles, and PLO makes it cheap to hold: equities run close, and a range built on nut-centric hands is comfortable getting raised by all three.
The classification work itself is bookkeeping, and bookkeeping is what software is for. The Hand Tracker's Players tab tracks per-opponent aggression and showdown stats from your own hand histories, which turns "he seems wild" into "he has shown down two bluffs and nine value hands", and that sentence is an adjustment you can bank. Pair it with the variance page before concluding anything from a small sample: most "reads" on twenty hands are noise wearing a story.