Hi George,
I got the following response from the TT Chair:
( i) We will be using the Long Track for the TT and Parade Lapping - as befits those events.
(ii) Also, I expect that the configuration used for the Advanced Driver Training will be mostly on the Long Track but there could be segments run on either of the other configurations (or possibly the skid pad) to increase the effectiveness (and variety & enjoyment) of the training possibilities. Anticipate a varied day, and also that the 'lapping' sessions for the ADT'ers later in the day, will be on the Long Track.