| My goal is 15 minutes prior...with a couple of exceptions:
Restaurants...unless I know the menu and staff really well, I usually take my bolus after eating. I am notorius for ordering and then only eating 1/2 of what I receive for various reasons. (Weight Watchers for one)
If I'm low or recovering from a low...then I always take a few minutes after I eat...give the carbs a bit of nurturing before attacking them, so to speak.
Parties/holidays...I often will take a small pre-bolus...then take a more exact amount after grazing. If I choose to graze that day or not...I find that takes an edge of spikes and gives me a bit to see how much I really ate. I used to go low from over-guestimating at holiday meals...now I do more of a split. | 
