There's so many things that could be done.
As I said in another thread, although it was more specifically what the Crocs could do to improve their pathetic turnouts, there are so many things that can be done. To rehash a few:
Defence personnel all get 2 for 1s.
Have a student night one or two games a year like they do in the NBA where uni students get 2 for 1s in a certain section. This is the exact demographic the league needs to be targeting: young, early adopters who consume lots of merchandise, snacks and beer. On those nights, organise a bus route direct from campus to the stadium.
Donate a section to charity for a whole season. They sell the tickets and that charity gets to keep all the $$$. There are whole sections empty at Townsville's home games. It's not something you would do forever but why not get creative and give it a go for a season? The karma wouldn't hurt a league that is desperate for some divine intervention.
Major sponsor is McDonald's at Townsville, for example. If you work there you get 2 for 1s to every game. Applies to every struggling franchise's major sponsor.
The problem is that most franchises are so shortsighted they don't understand that people who are getting in for free or discount still buy expensive merchandise, drinks, snacks, etc. as well as they will come back and buy full priced tickets if they enjoy the experience.
That's just scratching the surface. Marketing is so poor at pretty much every franchise except for Perth, they just don't understand how you sell stuff.
It's like every CEO just thinks..."if I jack up the prices, and give away no free tickets, it will maximise our profits, right? Meanwhile, if we spend as little as possible on the on-court product, it will keep our overheads low. I'm a genius!"