Denjac, I set lines couple times a year. From what I have learned on tablerock, if you leave them in clear site, they will not be there long. Have had many cut or stolen so I place them underwater normally. Mine are always deep, so that no one would have problems with their boat, but under that does not help lures. I do tag each line to identify and run each line every morning. I also pull each line after I am done. I have seen a lot of old lines that are just left in the water. Years ago found one that was covered in moss that had a 10lb carp hooked. He had been on there so long, it had a huge hole through his top lip, but guess he couldnt get the hook turned upside down to come off. Released him and cut the line.