In the Spring of 2008, I picked up the 2007 Navionics Premium Hotmaps version in the Cabela's Bargain Bin to use with my Lowrance LCX-17M. It was $80 compared to $150 new. I had a handheld Garmin eTrexLegend that was loaded with the Garmin "Mapsource Fishing Hot Spots" that I also used for ice fishing. I took them both out on Lake Arthur to compare their readings. I started out from the "Old Route 422" launch into "Big Run." The Garmin showed I was on the old 422 roadbed, (which I was backed up by sonar) while the Navionics mapping showed I was up on land on the east shore. While on the roadbed between the island and shore up from Crescent Bay, I took waypoints on both the Garmin and the Lowrance. The Garmin showed I was on the roadbed between the island and shore while the Lowrance with Navionics showed I was northeast of and on the other side of the island. Both GPS readings were the same numbers. I sent an email to the Navionics "GPS deviations corrections" person with screenprints and pictures of both plots, but I never received a reply. I believe the reason the Navionics was in the Cabela's Bargain Bin store in Wheeling was because the mapping was so far off and someone returned it.
