I have done some research on this site for best digging tools, and when I read about them, people say the soil they dig in is pretty good. Well, I don't have good soil here in San Diego. It is very hard, dry and rocky. What would be the best tool to use that will not snap or bend? No matter where I go, exept the beach, it is HARD. Any advise? I like the looks and price of the Sierra Dig-It knife for $12.95 on www.amleo.com, will it be good enough?