System 6 is bomber stuff. We ordered and applied it ourselves on all of our commercial fleet boats, about 22 boats in all, this past winter. After one season of use the bottoms of these boats are in great shape (as in no tears, or threads showing). I would recommend this stuff to anybody that wants to prolong the life of their rafts or tubes. The only down side that we found was the cure time. Let me know if you have any other questions about this.
The Warrior of the Light Knows that eveything around him form part of his Good Fight. -Paulo Coelho