I had dinner with an executive from major hotel in Las Vegaslast night. We were discussing football, and what the books will do this year. Here is part of what he had to say.
He said that the economy is going to hit the books hard this year. Because of that, look for more line changes than normal because the books are not going to be able to pass off action if the wagers become to one-sided, like they did last year. The books will make more of an effort to get as close to a 50/50 split than they have in previous years, and that means more line movement.
He said that while there may not be a huge difference in wagering lines in Vegas, the offshore books may be different. They are not nearly as coordinated or as big as the Vegas books, so you may see a bigger difference in lines at various offshore books. If you can divest, and spread your action over several books that can be trusted, you will be able to shop for lines.
He also suggested that lines should be played as early as possible (as in Sunday afternoon or evening, depending on where you reside) and as late as possible (meaning an hour or less before game time) to be able to detect line movements, avoid the "tricks of the trade" (lead lines, bait and switches, etc...) and look for possible middles.
That is the sum of what he suggested. Good luck to all this season.