Don't guess I have to, most of its under 20 ft of water so I didn't realize they stick around that long, I don't have much as far as electronics goes, cheap unit... I fish near the mouth of river on the lake and after a big rain the current gets stout. Sometimes the boo will move a bit... I had one last year that was so big I had to drill holes through the boo to get it to sink, had a full 5 gallon bucket full of Crete on the bottom. Maybe I should make them smaller and less buoyant.