Personally, I skipped the pill unless I ate at least 10 grams of fat, just because they don't cut that many calories when you are talking about so little fat and the pills do cost money. But ... I didn't eat many meals that were that low in fat because that isn't a balanced diet. If you are having more than a meal or two a week that is that low in fat and that high in calories, then you most likely eating too many carbs. Eat fewer carbs and you will be able to eat more fat grams before you are hit the calorie limit or feel full. That will be a more balanced diet.
Almonds are good for filling in a few fat grams without too many calories. So are Hershey's kisses, if you can stop at one or two. So are olives and string cheese sticks, cut in half. You'll find your favorite ways to do this and make sure you keep them on hand in your kitchen.
The thing about alli is that you only have to track cals and fat, but if you meet the target for both, it will snap your carb intake into place.

SW=197/sz 20 (8/22/08)
CW=157/sz 10
GW=150/sz 10=7 more pounds!!!
50 y/o, 5'9"