What type of Adwords bidding strategy did you use? Since fantasy football search terms are so popular, I imagine that your adwords campaigns could get expensive.
They were very expensive ($1-$2 per click during peak season) but it was worth it. A print ad costs a few thousand dollars and you're not guaranteed any visitors.
One thing I learned about print ads is the price is very very negotiable. Start with a price so far below their asking price that you feel embarrassed. The list price for magazine ads can be several times greater than the price they're willing to settle on, especially as deadlines approach.
Another good option is to advertise on small niche sites. There are a lot of "mom and pop" fantasy sites with cheaper advertising and the exact audience I was looking for.