Have had a platinum for about a year and a half. Have to admit, that it was a learning curve, but i finally got it figured out. Went to a local library with a friend recently and really had a great time coin shooting. Every time the platinum said it was trash, I just kept on going. Every time it said it was a dime, BOOM !! It was a dime. The same with a quarter and a penny. I was even telling my friend if the penny was newer or older than '79 before I dug. It gives different readings for the older pennies.
I have had a great time with the platinum. It is a lot of machine for the money.
The only thing I recommend is to change the battery as soon as the battery indicator shows that your battery is half empty.
Enjoy the land fishing and keep posting your success.
NCHOLEDIGGER