Why do you believe signs are to only be used in a Tyler Lodge ?
General Remarks of the Emulation, by VWBro Graham Redman, PGSwdB, DepGSec (now Acting GSec as RWBro Nigel Brown, PJGW retired from the position), Senior Member of the Committee of Emulation Lodge of Improvement stated clearly that once the lodge is closed, it is inappropriate to do the signs.
And by the way we do not have due guards here. I have heard of a rumour that the due guard is the position when you take the ob.