Yes, I have. I used this converter website : GPS Coordinate Converter, Maps and Info
But, my Lowrance Elite 5DSI does not recognize WGS84 (Decimal Degrees) ... so I had to use the GPS Lat/Long numbers that came up on the converter. Otherwise, my coords showed up on the converter map as being somewhere in North Africa
Since I first used the KDFWR attractor site, they've updated it to show more than one set of coordinate numbers. Before, it would only show one set ... and I believe that was Decimal Degrees.
Just be sure and test your input numbers by zooming out on the converter site map, just to make sure the coordinate marker is actually on Cave Run Lake and not somewhere "overseas" !!