What about trying an old weight watcher's trick? If you need to snack more than 2x a day, try leaving off the "dessert" from your meals.. usually a peice of fruit or whatever, then eat it later as a snack. Of course, whatever you save for later will have to be less than the 3 grams of fat allotted for snacks so it doesnt sabotage your alli's effectiveness.
Just a thought ;)
Sherry