I have been outside most of the weekend repairing and replacing a drip irrigation system. Its spring here. We have been mowing the lawn weekly since early February, even the tomatoes and peppers are in. So it was time to get things done outside.
The shower fix should work fine. I work with a manufacturer of molded fiberglass units. They can be repaired and finished pretty easy. Like I said, the problem is in getting a good finish. Once it is patched, use a good acrylic spray paint to match up the finish. Good luck with the project. I guess nothing ventured nothing gained. Thanks for posting back.