RE: When to quit?
As we get close to the end of October, you'll start to see more and more fish on redds. I havent seen any spawners yet, but the male browns are getting pretty aggressive. I was on a local spring creek this weekend, and saw a couple nice browns chasing each other around. This tells me the spawn isn't too far away.
There's no harm in fishing right now......just be carefull where you fish. After this weekend i'm not going to fish for trout til' december.