With 3 players in we're getting like 9:3 (3:1), on the first call, and another 3:1 on the 2nd if original bettor caps it.

I've read that it is good idea to raise JTs on the button when 3-4 have limped in--this is different. Here you are already getting 4:1 and so you are betting for equity, as everyone will call the raise, jez?

When there is a 3-bet, then we need really big implied odds, so I would muck this most of the time. However, if I'm seeing that the blinds are really loose and never fold, then maybe I'm calling. I think a cap would be bad.