here some ideas from an Italian and true Blue fan
1. good relationship and communication with the club
2. the club needs to understand the importance of an organized group of supporters, it might sound stupid but fans can be the 12th man very often
3. the club needs to understand that is also about £££ money, a group of fans like Blue Alliance can generate money (merchandise, scarfs, hats, flags, tickets, etc. etc.) and that is something that you guys might need to understand as well
Said that, the club - stadium - police or whoever is responsable need to allow the following things in South Stand
One or two drums and one megaphone to get people start to sing (I am not sure if this stuff is allowed)
Regular meetings (every week) for Blue Alliance members or people that wants to get involved with them
Meetings are done to organize particular choreographies for each match (doesn't need to be anything huge to start, no huge banners or anything)
Often in Italy, to make things easier, supporters clubs or ultras group prints some flyers explaining to people in a certain block or sector what to do
As I said doesn't need to anything HUGE or particular difficult to organize... we can start with SIMPLE THINGS ...
EXAMPLES, when the team gets on the pitch we decide a certain song to sing, print flyers if we are not sure all the people in the sector knows the song (or anyway it is a way to advise all the people in the blocks about the song to sing). These flyers get placed before the match on each seat of the sector/block. Another example, when team gets on pitch South Stand start singing that certain song and everybody with the scarf out, it is easy and simple everybody has bloody scarf. This simple thing, alone and at the start of match, would improve the atmosphere of the stadium... Same thing to be done at the start of the second half ...
Then we choose a second song, and on that songs scarfs out again but this time rolling or moving in circular way (sorry, dont know how to say it)
And this is just an example of how to start things.... then we can get more and more organized, do some small coreographies with flags (need to be allowed in n that certain block) etc etc