Oh!!! I was looking on the main main page. I didn't know you could do sub boards; that's a great place for them!
The only problem with having them be sub boards is that when DBT1 is solved, it will move under the Solved Hunts section. I assume the mini hunts will move with it, even though they would not all have been solved. They really are totally separate hunts that just happen to be by the same creator.