What do you mean by very small?
That is a relative term.
Where is the whole located, what caused it, is it just in the outer laminate or does it go right through would also be good things to know.
There are a number of people on this forum that could answer your question. However you would be far better off sending a private note to John Pierce.
As he built the boat I'm sure he will give you the right answer first go.

Regards,
Phill

I know that the voices in my head aint real,
but they have some pretty good ideas.
There is no such thing as a quick fix and I've never had free lunch!