I am assuming that you mean a shovel with a fiberglass handle. A picture would have been a nice way to clear up any confusion. Your reasons why would also have been helpful.
Name: Toni Denver Metro (Zone 5a) Whiskey Tango Foxtrot.
I didn't post the picture. Someone else put the picture onto my hint. And I think that having hard or rocky soil would be self-explanatory for the need of a fiberglass shovel or fork.. breaking wooden handles is too easy with that kind of soil!