Message in a bottle? Five ways of getting around maor foirne's disbandment

How will teams get their point across now that the maor foirne role has been disbanded? Hurley carriers, positioned on the sideline in the middle of each half, would seem the best placed alternatives in the small ball game but in football there are no such equivalents

How will teams get their point across now that the maor foirne role has been disbanded? Hurley carriers, positioned on the sideline in the middle of each half, would seem the best placed alternatives in the small ball game but in football there are no such equivalents as water carriers have also been discontinued as part of Covid-19 regulations. 

So what can be done?