Don't beleive the myth that you clear out the donks when you play real money games. There are donks, drunks, tilted, and people with more money than brains at all but the highest levels.
If you are trying to develop your game try to play higher play chip levels. You can build almost a 100,000 play chip fortune without playing a hand! I saw a post about it once and tried it out of boredom while waiting for freerolls to start. That is why play at the 2,000 level on FT is such a joke.
But is you really want to play some decent poker without depositing, you have two choices. One build a play chip bankroll and play at the 10,000 buy-in level or above. The play gets decent. Two build a bankroll from freerolls.
I'm damn near a poker novice and I've managed to build a very modest bankroll from playing freerolls for about 3 months. The open freerolls are pretty tough to cash and take 5 hours plus to make the final table. Private freerolls like cardschat, rounders radio, and railbirds, offer smaller fields, higher payouts, and a flatter (more generous) play out often paying top 10% or more.