How long will a "hot patch" work? I bought a salvaged Hunter 27. During Hurricane Ivan the boat washed ashore and took on a few inches of water while laying on its side. The water came in through a hole on the chin/nose of the boat. The hole is about 12" in diameter. The boat was lifted out of the water and set on a barge. A fast/hot patch was made and was allowed to set for 4 days before the boat was put in the water. That was 8 weeks ago. Boat yards say it will be months before it can be pulled out of the water for a better repair. Soooo how long will this work?