Go to www.westsystem.com

Pick 'Projects' then 'Index', then 'Boat repair & construction' then scroll
down to 'repairing machined holes in fiberglass' and click on the link.

Do what they say, and to thank them for providing such help, use their
products.

Jim

John wrote:

A few weeks ago I posted about fixing a seat on my sailboat that was loose.
Today I removed all the screws and pulled the seat out.
The screws are held only by the fiberglass; I thought there would be some
wood, but there isn't.
I plan on using bigger screws in the existing holes and adding a few new
ones.
My only real problem is what to do about one screw hole that I tried to fix
last year, but just wound up making way too big for any screw. Can I stick
a plastic wall anchor in it, or maybe a toggle bolt; or am I best off just
abandoning it?