Seriously, have some JB Weld onboard. Great stuff. We have a fiberglass tape-reinforced JB Weld repaired pipe nipple on our exhaust system that has now gone halfway around the world. It started as a temporary repair and just seemed so secure that we left it alone even though we have the spare part onboard.
In South Africa doing lots of boat stuff. Departure north from Cape Town around December 15th. Arrival in the Caribbean around the beginning of February, after 5300 miles or so.