Isolating on limpers is very profitable, and if you are tossing hands like KTs on the BU with 1-2 limpers, then yes you are losing out on some $$$. Hands like Broadways and decent aces are great to isolate on limpers from
LP. Likely you are already
ahead of their
range. You will have
position which will allow you to easily either valuetown them when you hit, or
pot control when you feel weak.
Hands like
suited connectors, small-mid pps, probably perform better to just
limp behind others in this situation. With these kind of hands, take 55 for instance, you aren't going to hit the
flop hard often enough. THe only flops you are going to feel really comfortable on is if you
flop your
set. So if you isolate with a hand like 55 on a limper, and he calls, and you
miss the flop and he
check/calls your cbet, you have very little
equity or SD value in most cases.
Also, remember just like everything else in poker
it depends on the villains. Villains that like to
limp/
call, and have a high
fold to cbet are ideal to isolate on. They are the type that believes
any two cards is profitable to play until you see the
flop at least. And they likely play fit/
fold postflop. So
raise them up, take the
flop, and then take the pot. Ez game.