Hi there ventrolloquist, how are you today? Thank you a lot for sharing your doubts. Let me trynna help you.
I don't know which strategy is best for 6-Max games, although exist some consensus that limping too much isn't profitable in the long run. (either open-limping or limp-calling)
Many players use HUD profile, so it is easy to spot a player who is limping too much, specially out of position. There is a stat named Call Open, where we can adjust and put a pop-up to perceive the % of times players are limping/calling x position.
It seems that you are limping quite a bit, because 30% it's a huge number. Try to observe how much you are limping versus position. Example: Limp-call from MP, CO, BTN and SB.
When we limp too much we start to be exploited for value:
For instance, if you open-limp/limp-call 22-66 from UTG or MP, and a player in position raises your limp 5x are you inclined to defend your pocket pair in a high frequency? Maybe not.
When I see that a player limps and calls raise a lot(60% limp-calling versus raisor or more), I will put a 6x, 7, 10x raise preflop to put the player in very hard spot.
There was one hand where I see the limper use to call versus raisor 88%! So, I had AA and raised versus limper 18x preflop, and the player called with 66. Flop comes A6K I bet 2/3 pot and the player shoves all-in and I insta-called (sweet).
Let's assume you limp-trap AA, KK and AK. Nobody raises and the BB checks. Comes a flop 357 rainbow, BB checks and you bet 1/3 pot. BB now check-raises you to 3.3x, it is an easy call and we see a turn: another 3 in the turn and the player in the BB bets 3/4 pots, are you comfortable at all with your AA, KK and AK? Maybe not too.
What is the REAL problem of limping in Cash Tables?
A) By limping you are leaving the initiative behind, you are losing a fair chunk of equity preflop.
B) By limping we cannot represent anything postflop.
C) By limping we are just praying to hit your hand postflop or fold, because we have no initiave.
D) By limping, we open doors to create high variance spots, and huge reverse implied odds scenarios, where we are going to play with players that are hard to leave their equities postflops, multiway pot. We are not going to make a lot of value playing 3-handed pots, 4-handed pots, etc. By raising preflop we also avoid that many players enter into the pot, turning our equity and playability confuse. (hard)
A very decent LAG player will have stats of 28/24/3.5 at a 6-Max table (5000 hands sample) depending how passive or aggressive the player is.
A TAG player will have stats of 20/16/3 depending how passive or aggressive the player is.
A NIT player will have stats between 18/14/3 or 15/12/2 varying of how passive or aggresive the player is.
Sorry to say like this, but stats of 30/23 with AF under 3 or above 3.5, it is the fish...
A player who will be exploited to death at the tables. We don't want to open doors for our adversaries tear us apart.
If you have a good hand open the hand, so you will have initiative postflop. If you see a good hand but it is scared about being 3-betted or get too many callers, don't open! Simple and plain, don't open 100% of your combos or you are going to lose money.
You said that you limp-behind when some other player limped? It is the same of limping IMO.
Here are some topics on the matter:
https://www.cardschat.com/forum/cash-games-11/open-limping-it-so-bad-233455/
https://www.pokernews.com/strategy/a-preflop-question-is-limping-lame-27755.htm
https://upswingpoker.com/limps-poker-open-limpers-strategy/
I hope it helps you Nick! Have a nice day, and remember: life can be beautiful
Regards;
Carlos 'Aballinamion' Barbosa