I saw your post on the OmniPod. I saw some details on their site about different basal insulin periods. My personal suggestion is, if you're not using that already, then investigate the manual and the process for setting those up. Identify one of them as "Track Day" or a series of them as such, and calculate out a basal amount that's lower than your other days. The lower insulin level on track day will allow whatever supplements you eat to be more effective and the activity to be less effective for dropping your sugars.
Remember. Diabetes is a balance between insulin, activity, and food.
Insulin is a -ve. Activity is a -ve. Food is a +ve.
Blood Sugar Change = Activity + Insulin + Food
Is your Blood Sugar Change negative? Increase food. Decrease activity. Decrease insulin.
Is your Blood Sugar Change positive? Decrease food. Increase activity. Increase insulin.
Is one of the three factors increasing? Change the others to accomodate.
You want that Blood Sugar Change to work out to as close to 0 as you can (don't bother trying to work out the units, it's an illustration lol). Don't ignore changing your insulin, because it makes it so much easier. Besides, I can definitely say that a good workout will cost me several sandwiches and a bottle of orange juice worth of food, and not everybody's stomach is that big.