I think the MAT and TAT are both very good options that can, and should be used
at the appropriate time and place. The MAT is an excellent call for Sports
Class where the competitors may be flying everything from an ASH-25 to a 1-26.
Give them several turn points and the ASH driver can get them all and then go
looking for more trouble to get into. The 1-26 driver, on the other hand, may
use up his alloted time in obtaining the first few turn points and then return
home at any time for full credit and speed points. The MAT is also a good call
on a day that may be very weak. If conditions prove better than forcast,
contestants are free to continue onto other turn points.
The TAT is an excellent call on a day where thunderstorms may be a problem, but
exactly where and when can't be predicted too well. Call the TAT with large
circles and the pilots will do the rest.

Both of these tasks are new to US soaring and therefore are being called so
that competitors can become familiar with just how to fly them. I would hope
that in the future they would be used in the appropriate conditions and will
save the day from an inappropriate call where contestants are forced to fly
into dangerous conditions on an AST.
JJ Sinclair