TS started out as an Open House when DHRA made it a race, it remained small till they made it a combination event (according to sleddy)!
The race in ATL appeared big because of the other people who ran with us (non diesel), our last year there was okay but the registered diesel racers was still pretty small.
Why didn't we go back? We were thrown out because of our groups actions that last year. Can we go back maybe, good luck to the other group who is booked there! Hopefully diesel locals will support it!
Honestly I think it's a combination of reasons for small numbers for drag only diesel events.
Blame it on mostly economy, too many groups doing it locally so why travel, numbers were not that big to begin with so when split and divided it appears even less, epa/go green- less involvement because of black smoke by major sponsors which means fewer teams, unless the few big fast units show (Scheid, Banks, Morrison, Dr P, Stuckey, etc, 6-9 second runs) spectators will not watch or pay to watch trucks, even NHRA attendance fell off by 50% last year at tracks, and still the major reason - economy!
Why pulling is more popular is a whole new thread but it goes back many many years in rural areas! and you can do it anywhere there's dirt!