Hoosiers have not proved faster at every track - just sayin.
Also, I don't think we get to pick which rules we want to follow.
The first year the Hoosier came back, 2010 Nationals 7 Track Records fell.
Help Me out..
Sebring Long, VIR, Road America x2, (Sprints, Run Offs), Savannah, Barber, Homestead,
Just about every track configuration the tire proved to be faster.
The new SM7 is a whole new animal, new setup and learning curve. Should prove to be interesting and save a lot of people money this year.
Maybe I missed these answers, When can one start testing with it? When available? When does the field have to start using?