Or people could just...you know...follow the dang rules!!!!
I think SCDSL put their club pass rule in place to help with "development." If a player on a Flight 1 team isn't getting much playing time, she can be club passed to the Flight 2 or Flight 3 team. And if a girl on the F2 team is having a great season, they can pull her up to the F1 roster.
But I don't know if that is how it works for many teams though.
The Flight 2 team has been struggling and has a game on Sunday. They Flight 1 team plays on Saturday. The Flight 2 team isn't going to ask for the girl who is only playing 5 minutes per game. They are going to look for a scorer, a brick wall in the back or the 2nd coming of Hope Solo.
Or if a F2 player is brought up (and the F1 team isn't missing any players), you'll get dirty looks for taking away playing time.