re: Poker & Playing against a loose calling station
This is a fairly rare fish, but I call them "ATMs". Cause ultimately they're just handing out money.
The problem is as you've said, they're calling any pre flop raise, and you end up with a lot of multi way pots. Playing multi way is always more challenging than HU.
My strategy in this scenario is to rely more on position than cards. With later positions I'm raising anything that plays well HU, AND, anything that plays well multi-way.
OOP I'm only raising absolutely premiums.
So the biggest problem on the table isn't going to be how that kind of player is playing, it's whether or not they're on your left or your right.