You have the full on FT with lots of Nob twiddling and generally the bigger better scopes.
The Sporter which is very much like HFT so rather than sitting shots you do unsupported prone shots. There is no playing with your scope to range find on the line .So I use it as HFT practice, the distances are out to 55yrds as it's a normal FT course.
It lets people experience the FT courses without going out and buying all the gear really.
I'm new to the FT/Sporter side of things myself so might not have explained it quite right.
Hope this sort of helps