PS was good, although I have not jumped on it or hammered it.  Remarkably stiff, I had to cut slots in the inner layer of glass to get it to conform to the fairing shape.

The rudders halves are built, one of them is joined.  The ps moulds did not like being filled with sand (alternative to vac bagging) and compressed a little, but once I realised this, they were ok.  The compression means the leading edge radius was bigger than it should be.  Pretty easy fix with some bog and a straight edge.  The Foamular or Dow 400 would be better.