Not seeing a lot of hands from other players

There's really not many times where i see actually what the guy who won a hand has because it's doesn't get to the river that much at my home game. Any advice on how to guess their tendencies more without seeing their cards? I imagine this is easier in online poker because you can check what their hand was afterwards. I play with mostly the same guys every time so I have a lot of them down, but I'd be interested in tips on getting tendencies from a player when they dont show their cards.

Here are some things I just thought of...

Note the frequency at which they will raise from different positions... If it is the same from every position, you know they are playing some hands that they shouldn't be from early position and a late position re-raise with slightly lower quality hands than usual may be profitable.

Watch how often they call down flush draws, if they are doing that often you could assume that they are overvaluing suitedness.

- sed