Slow start on opening day

The Slaney got off to a slow start on the opening day today. At this stage I have only heard of 4 springers landed and about  6  lost or met. Top rod of the day was Eamonn Power with 2 fine springers. Not that many fish were seen even though the river was beautifully clean. At 2 ft it was a little high for many of the lower beats. The question is have the early run fish (there always used to be good catches on the old opening date of the 26th of February) taken advantage of the  high comparatively warm water of the last months and run like hell  or have they not arrived?