Playing against a calling station

[kitaristi0]

I occasionally play a traditional Finnish card game called soko, which is basically no limit 5-card stud with a replace on the end, with my dad and brother. They're both huge calling stations.

Normally, if this was a full table, I'd just wait it out and then let them pay me off when I have the goods. But because we play 3-handed, I have no idea what the best way to approach this game is. Should I just resort to checking it down whenever I can, unless I have a monster, or should I just play normally, betting when I think I have the best hand and that sort of thing?