A nail hole? Check out this repair Herm Hoops just did:
I just finished another repair. A couple of weeks ago we had some very strong micro bursts of wind, one of which broke the Avon loose and impaled it on a juniper, creating to very large tears in the tube. Had it not been for the rubber rub strake, which many manufacturers are no longer putting on boats, the damage would have been worse.
The tear on the inside of the boat tube
And the outside tear
After removing seams, rub strake, d-rings, baton attachments, etc., applied inside patches