Trying to put Corp of Eng. Lat/Long. on Humminbird fishfinder using HumminbirdPC. It will not accept the numbers I put in Keeps changing them. When I look them up on Google earth thay are somewhere other than Oologah Lake.

I want to put 2010 and 2011 brush pile on the Humminbird FF. Hoping not needing to set it up one number at a time.

Thanks for your help!