After wetting out, we laid up 6 plies of thin model aeroplane cloth on the bottom side.
They were laid up 3 plies at a time, (on plastic), straight, bias, straight.
Then we put a piece of 3M 375 packaging tape over the layup and a piece of self adhesive sandpaper to help hold shape.
A little flox was applied to fill where glass is missing.
Y10-09-30