Hi Drew,
Basal Bolus is a long lasting insulin, normall lasting for 24 hrs, such as Lantus(brand name). You would supplement this with rapid acting insulin at mealtimes. It is a very good way of controlling your BS's, as it replicates what the body does naturally.
I too work a rolling shift pattern of early, noons and nights, and I find that it works for me most of the time. Nights can be a problem in the transition period of starting and finishing a week of them, I normally suffer a few Hypos the day after finishing nights as it's what I call 'Shiftlag' which is similar to jetlag.
Hope this answers your question.
Andrew.