Ok so after a couple of hours work the rudder has a layer of resin with glassfibre matting. The surface is a little uneven but another coat of resin or two with a bit of sanding and maybe some filler will see it smooth as silk (rough silk). Then it will be ready for getting the shaft fitted but more about that another day.
As for today it needs To set a bit harder and then I shall put some filler along the edges and some glass fibre tape as reinforcement and job done. 
Saving Anne Marie 