This patch kit is so simple! No glue to mess with, no long wait times, no worries! Just dry off your raft, find the hole, and cut a circle out of the patch kit and slap it on. The kit works great mid river too so you can fix a problem in the field and keep paddling and not have to wait til you get home. If you have one of the Ti-Zips on your raft you can put a patch on the inside and one on the outside too. I’ve used a few of these patches and haven’t had any problems with them.