The 2011 NFL preseason (NFLX odds) and the 2011-12 NFL point spreads will provide a once in a lifetime opportunity. Both the lockout and the fleeing of sportsbooks from the US market create big advantages for the sharp player. This will be the biggest gap ever between the haves and the have nots, the sharp and the square, the pros and average Joes. A not-so-average Joe, Grandmaster Sports Handicapper Joe Duffy, CEO of OffshoreInsiders.com, the top NFL and college football betting site in the world explains why.