This weekend I finished glassing the hull of my shearwater 17. I had two issues which did not come up in the documentation and was hoping for guidance.

1. The edges of the layers of glass started loosing threads during the epoxy stage. There are several of these threads along the cured sides. is it possible to sand these down without damaging the glass?

 2. I have two small bubbles along the keel.  I was planning on using a knife to slit a hole then fill, will this be seen on the finished boat?

Thanks,

Michael.