So, Stx22, how did you make out? Here is a feel good, encouraging story for you, if you havent found it yet. This thread was well timed as the previous week I lost a course. Real kicker is, it isnt my course to lose, I have had full time custody of it for a few years, but still, not mine. You know the story, its like a piece of exercise equipment, someone bought it, decided it was too much fuss, so it sat for about 10 years. So I deploy it and retrieve it since HOA rules say it cant stay out. This year, ski partner and I decide to take the balls off and let it sink, with one buoy about 5 feet deep marking one anchor. To test finding it, we circled around the lake once and came back to "the spot" and couldnt find the buoy to save our lives. In subsequent days we both searched with masks, no luck. Based on this thread, I went and bought a $7 grappling hook off ebay. I know kind of where to go since I had a GPS waypoint, but as we know, phone GPS coordinates are less than great. Day one, I did about 7 transects where the mainline should be. Nothing except an extremely heavy log, I am guessing, because it never made it to the surface. Went back about a week later and did about 7 more transects. Bingo, found it. Hauled in mainline, pulled back to anchor. Marker ball was still on the anchor tensioning line, no idea why it disappeared from surface view, but it was there when I pulled the anchor up. I didnt mention, the shallow end of the course was at about 30 feet, deep end, 40 to 50 feet. Moral of the story, I think I will continue to deploy/retrieve the "not my" course from now on. A few stressful weeks there.