Augs,
Earl is exactly right. I have spent countless hours scalping and middling and profited handsomely. However, the vast majority of my profits were 2 to 3 years ago BEFORE Don Best. You see Don Best is so widely available now that any divergence in lines at any 2 books is quickly closed and it never gets large enuf to be worth it anyway. You do have the rogue books that don't follow Don Best, but then you're worried about the stability of the book. For these reasons, I personally have been in the process of getting out of this business and should be completely out in 6 months or less hopefully (waiting on some Rogue books to pay, incidently). Take the advice of most of the posters here - scalping is profitable, but if you calculated your profit per hour it would work out to about $3 or $4. Miccy D's pays more than that!