A few more thoughts after playing some more…
I’ve introduced the game to several people and found that new players have very consistent tendencies. In general they’re too risk-averse, manifesting in
1. Being reluctant to call bluffs, and
2. Not bluffing enough. When they do bluff, they often exhibit extreme timing tells. That is, if they actually have it they will block instantly. If they don’t, they’ll think a long time before bluffing.
So if you’re playing a new player, you can get away with profligate bluffing. If you’re just starting — bluff more!
I still haven’t played with more than two players, looking forward to that.