we apply treadmaster on a regular basis to the boats tubes in severe wear areas. use a good quality pvc glue on a pvc boat, and you can use hypalon glue on hypalon boats, and prep the area very well, we have had no issues with the patches loosening or coming off, even when the ribs are deflated for winter storage. We use them alot on scuba diving boats, as well as tourboats where customers are in and out alot stepping on the tubes. if you have any questions,email me
darren@inflataboats.ca thanks
cheers