Other mistake: While Katniss and Johanna are unreeling the wire on the way to the beach, it snags (or is deliberately pulled) behind a rock and Katniss tugs on it till it snaps. The wire was coming off a spool and becoming caught up would have no effect on how the wire unreeled, because the spool would keep on turning regardless. In fact, a taut wire behind her would be what she wanted.
New this week Question: During Katniss' individual assessment, was Peeta the one who painted that picture of Rue? I read that it was but that doesn't explain why Katniss got angry when Plutarch tells her she has 10 minutes to present her chosen skills. Or why she made that dummy about Seneca Crane?THE GAMER NEXT DOOR