I've only had season tickets for the last two years. In years past, I would scalp some tickets and it just depends on what you want in your game day experience. If you want to do pre-game in the stadium (band, running through the T, etc), look for the best possible seats. Don't be afraid to ask anyone what they have and what they want for them. I'd usually pin one against the other (since they all congregate together). If you're simply looking for a deal, mill around the stadium right before kick-off. Inevitably, someone will unload a set for less than face value.