By tables, 6 hours SI and you're clean. Which means when you wake up in the morning, you're in no pressure group. Guesstimating conservatism by tables after the 1 or 3 dives of the day is trivial. So when exactly are you "going very conservative": fifth dive of the day? Sixth?
I routinely do 4-5 dives/day on liveaboard dive trips. Losing my computer on dive 3 would suck for that day (and the rest of the trip if stuck using tables.