Thanks for your advice/questions. After leaving my post here last night, I spent most of the night working for an answer. I did manage to discover the selections for importing my data (entirely by accident...I was just clicking on options just to see what would happen). I was then able to "create" a map........sort of. Seems that last winter, while ice fishing on an entirely different lake, I made some recordings. When I imported my data last night, I kept getting an error message that the "custom map" exceeded the red square "canvas". It took me a while before I could actually understand what the error message was trying to tell me. Well, I deleted everything, and then went to bed. I plan to re-import just the data collected the other day, and try all over again. I suppose it is a good thing when one makes mistakes because it forces me to learn more of what is available that way!
One last question, do I need both the .dat and the B000X.son files to create a map, or just one or the other?
Hummer...1198hdsi, just purchased and checked for s.w. updates-don't remember exact number.....sorry