Main reason for that is that there is a perfectly good track at the Naul that is raced on every week and could easily be used if common sense were to prevail.
The second reason is that the members want to race every Sunday and not waste time ripping up a track at the Naul to lay one in Lucan as I believe the fire-hose at Lucan is not suitable!! And the pipe is screwed to the floor in Naul.
These are my observations as I am not on any committee a just want to have some RC fun with like minded others.