If it's less than 5 years old, it's still under warranty.
A- The boat we are looking at here is built by Hobie Cat Europe.
B - I am not sure what their warranty is. Hobie USA is 1 Year, but when something is clearly wrong... we would cover it. You would have to contact your European dealer / Hobie Cat Europe.
C - Yes, the Hobie 16 uses some vacuum bagging process (in the US anyway). Specifically on the foam layer to make the foam adhere to the concave surface in the mold.
D - There should be glass in the pylon hump, but it may have some putty filler as well. I can not tell from the photos whether you have taken off the glass or not. Looks like gel coat and resin as described. The glass should be a layer or two right on the gelcoat. Any filler putty should be inside those layers of glass.
