Thanks!
Daisy gets TONS of exercise, trust me. Between me, my sister, and my dad she gets a walk every day and at least a couple hours of playtime (fetch, just plain running around). Also, I am teaching her to jump, and she loves it, so I do about half an hour of that every day.
The only time that she is good is when she is drop-dead tired or when I am training her and she is trying to show off.
I've tried many things. I've tried clamping her mouth shut, but it doesn't work because she is too strong. I've tried yelping (that was the first thing I tried) really loud every time she bit me. I also have tried walking away, but she just gets up, jumps on me, and keeps biting me. I've given her a command as soon as she starts biting, but she won't listen. I try to talk firm, but I'm a bit of a joke to her.
Oh, and she's only a year and a half, so she's still a puppy. She's using biting to get her way, and even though it's a puppy thing, I don't want it to turn into agression.