They are not heavy enough nor can you figure out how deep your lines are running. In the summer, salmon are usually suspended near the thermocline over very deep water. An example would be to mark fish 60-80 feet down over 250 feet of water on a typical July day. With dipseys you can guestimate how far down your lures are running by an unscientific rule of every 3 ft of wire line out gets you 1 ft in depth. So you might start running your dipseys back 200 ft back. Then if you see marks on your fishfinder at 80 feet down, you let another 25 feet of line out to get down deeper. The dipseys are stealthier than a downrigger because your lines are further away from the boat. If you want to catch salmon on the cheap...buy two tite-lok rod holders, a good fishfinder with gps speed, two of those wire dipsey combos and a few flasher/fly combos. Last summer was my first year trolling for salmon and i got hits or caught fish every time out on my dipsey rods. Downriggers were not as fruitful.