I did my Kassam Out protest with about 10-15 others many many years ago and the rest of the East Stand shouted us down, and then a few months later the same people who objected to us protesting against Kassam stormed the boardroom as they sought hero status by saving the club from a money grabbing tyrant. I am not starting anything again and will only join in unless there is a clear majority of feeling amongst everyone else. Not because I don't want to but I am now almost 20 years older, things have moved on for me as a person, the club is nowhere near as important to me as it was 20 years ago, but having said that I still want my daughters as next generation supporters to still have a club to support in the future so the club still has an important place in my life, just not enough for me to start anything off again.
In terms of protest it will only work if it is properly organised with enough people prepared to commit to it. A half hearted protest is probably worse than no protest at all.
A protest outside the ground on a day that there will already be a heightened police presence will not work, and could be an opportunity for the opposition fans to try their luck at the massed protest group and allow it to all kick off.
Taking your seats late also will not work as the breezeblock concourses are too small for us to wait in and it could become dangerous from a safety point of view.
Tennis balls on the pitch will probably mean a fine for the club.
Chanting of Robbo Out needs to be started before the game and needs to be continuous throughout the game win lose or draw.
A lights display using our phones could have worked but not with a 12.30 kick off. Still a maybe?
Really not sure what else you could do. Turn your backs and not watch in silence for 2 minutes - needs a strong will to do this and not turn round if we get close to having a shot on goal, however unlikely this might actually be at the moment. This is sure to get some TV coverage.
Just make sure even if we do win and put on an incredibly good performance that any protest against the manager continues despite this.
And somehow within the protest against the manager, you have to support the team. League 2 football has to be avoided at all costs irrespective of what the board think or fail to do, if we stay up make sure the supporters get the credit for it and not the manager or the board.