I talked to a friend that races a Spec Boxster, and he told me that his smokes under hard braking (sometimes). That is a good James Bond strategy to open up some space ahead of your competitors in racing, but for a track days, it seems un-necessary.
After talking to him and mulling things over about this issue, I ordered a new AOS and a fancy stainless steel racing oil sump baffle from Pelican. I know the baffle probably won't affect the smoking, but it will reduce the chances of starving the pick-up of oil in the long left-hand turns.
Once the parts are installed and I do another track day, I'll update what is happening.