RYA NHC Anomalies

We run two fleets which are both scored together and separately. We have been using manually calculated progressive handicaps but I have been testing using RYA NHC in Sailwave instead. I am using the actual results from our second series which experienced several light wind races. However, I am getting anomolous results:

  1. The handicaps for the Multihull don’t change from the initial setting, while the Monohull does.
  2. One of the monohulls develops a negative handicap. The only issue I can find with this boat is he showed everyone the way round the course by a long way in Race one.

Does anybody have any suggestions?
2025_Series 2 GES 2.blw (54.3 KB)