Cut the patch. Cut a piece of vinyl that will cover the hole in the tent with approximately an inch around the hole.
Clean the surface to be repaired. Gently clean the surface area with soap and water. Allow to dry.
Gently sand the area around the hole with light sandpaper. This will help the glue and the new piece of vinyl stick together.
Apply the adhesive to the area around the hole. Using a thin paintbrush, apply the adhesive to the sanded areas around the hole. Do not use too much adhesive, as it will seep out around the patch.
Gently press the patch over the hole. Let the patch sit for at least 12 hours.