NBL was more runned by families and volunteers. Also I have got the idea that NBL track were little better, more European style. I don't say that European track are better, but in this case it's better. ABA track were pretty flat. One reason for that might be that ABA was pure business. If there is 60 motos at night you don't want to have many crashes to slow down the races. NBL were also more common in east cost, hardly nothing in west.
Anyway, NBL got to financial problems. They tryed to fix that by selling monthly tickets. You paid monthly price and were allowed to race as many nights as you wanted. You got your points from races but not trophy. And I can tell that some times it feels that here in BMX everything is only about the points. People are hunting points to get District 1, or NAG 1 plate. Mostly people are just running from race to another to get points. They have NAG 1 plates in their eyes and no one cares about dollars or enjoying the sport. What ever, people find the idea of monthly payment too weird and didn't buy that.
It was the end for NBL. ABA took over whole organisation and became USA BMX. Now there is over 370 tracks!!
SORRY PHOTOS ARE ONLY ON FINNISH SITE