HELLO, EVERYONE I AM VERY GLAD THAT THIS FORUM RECENTLY CAME UP,AS I JUST ACQUIRED A LOWRANCE iFINDER H20!! I LIKE IT ALOT, SO FAR, ALSO USING MAP-CREATE,SERIES 6 TOPO VERSION. QUESTION, WHILE FIDDLIN AROUND WITH THIS TOY, OCCASIONALLY I GET A FULL SCREEN SPEEDOMETER,JUST LIKE A CAR.MY PROBLEM IS THAT I DON'T KNOW WHAT I DID TO PULL IT UP. I CAN'T SEEM TO FIND IT IN THE BOOK AND HAVE NEVER SEEN IT ADVERTISED IN ANY LITERATURE FROM LOWRANCE.HELP ME PLEASE.