You are probably calculating your protein and block requirement by hand, and doing it correctly. Dr. Sears set the 11 block minimum after his first books were written, so you wouldn't find mention of it in the earlier Zone books. If you use the Body Fat Calculator on this web site, you'll most likely find it will give you 11 blocks. Here's a link: http://www.zonediet.com/tools/body-...calculator
Also, to ease you mind, in applying calories to blocks, even taking into account the 3 g fat into account, your result is conservative because you haven't added the total P, C and F calories in each food choice. If you were to count each and every calorie, it would increase your overall calorie count. For instance, many of the foods in the fat block category also contain some protein and carbohydrate (avocados, almonds, olives, etc.), those in the carbohydrate category can also contain some protein and fat (hummus, beans, etc.), and so on.
The ease of the At-a-Glance method is that there's no counting involved, and you end up basically with the same thing on your plate as you would when using the block method. Both methods work very well.
Consultant of Zone Labs
Certified Zone Affiliate