adjusting to shorthanded action

[CasaJJ]

I'm very familiar with shorthanded NL and for a number of months have played FR LHE up to 3/6. I'm now trying to adjust to shorthanded LHE at 1/2 and 2/4 and would appreciate some input.

One major difference I am finding is the large number of people going to the flop. Even with raises in front, I'm seeing so many players calling with weak hands and even lots of raises with weak hands as well.

I recognize the importance of aggression, especially at 6max, but the preflop action I'm seeing just seems to be crazy. It seems like all the rocks at FR have been replaced by action junkies when playing 6max.

I'm trying to adjust my game to deal with this and have tightened up, but I feel like I'm limiting the hands I should be playing (recent sessions I have been about 18/23).

Since my preflop raises will rarely thin the field, should I be limping more and raising less? Limping seems to go against everything I have learned, but given the circumstances I wonder if it is best. The books I have read certainly promote an aggressive style, but now that everyone is aggro I wonder if it is best to tighten up and wait for them to pay off.

I realize all games play differently, but this is definitely a trend I'm finding at 6max.

Thanks for the input.