I think its hard to intentionally avoid good players in low stakes sng's as the tables fill up so quickly.
I am playing poker again after a break, so concentrating on building bank role, so I am currently only playing 1 table at a time.

With the extra time I have available now I note the players that are booting up multiple tables (as they always play predictable start/med game) I also note things that will benifit the end game...who are the blind stealers, who plays pushbot poker when blinds hit certain limit, who pushes 1st to act but only calls bets with good hands, who calls ai bets loose...
On a site like party where you can choose your seat I then sit to the right of people I can bully in the end game and to the left of people who will be easy to defend against, or wont take all my blinds.. It also helps with midgame decisions, if you know you have a tricky dangerous player to your left then you know you need to take more risks mid game as you wont be able to blind steal freely later on.