Suggestion: until numbers are up significantly, have the band play a tune or two at the beginning of the half on the sideline facing the west stands; no marching or spread out formation ,no plumed hats, and fun tunes to play instead of the same tired "show" every week. Then give them access to a room in Bridger or Pruitt (I think that's the new one behind the east stands) during the remainder of the half and into the 3rd quarter including the buffet, and if 21 y/o two drink tickets. Back in the stands for the 3rd quarter break and remainder of the game.
You may have missed my ‘treble’ pun.
Regardless, another way to grow the band - not sure if they still do it, but GT used to have Georgia State students join their band for football season. It about doubled the size. However, since GS now has a football team, they probably don’t do it anymore.