If you would like to experiment you could try using this.
You still have 1 cylinder to get you home. As to what is
taking place to the covering to cause it to crack – this
may be just the first of many cracks to come. If you
decided to continue using it and it doesn’t fail you
should check it at least yearly.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.