Do not use pvc cement. This will permanently bond the pvc, and you will never get it off without serious damage to the original hull material. I suspect the same for two part contact cement. I haven't tried gluing pvc with rubber cement, so try it first. The directions went like this.
Outline keelstips on hull.
Apply a second coat, and let it start to tack up. Roll on keel stripping, do not lift up after it has come in contact with rubber cemnt. Use a spoon to roll press down on strip. Let dry for two to three days. I didn't do the whole keel, only the back two feet where some brasion had occurred.