There are a few advantages to using an electromagnet for magnet fishing, but
  not all of them are evident. This page discusses the benefits and drawbacks of
  this approach, as well as where to fish and what sort of magnet to use. I'll
  also talk about Neodymium magnets and how to properly boost the voltage of
  your magnet. After reading this guide, you will be able to begin fishing with
  an electromagnet securely.
    
Pros
  There are several advantages to magnet fishing using an electromagnet.
  Magnetic fishing provides various health advantages in addition to being a
  simple fishing approach. It enhances blood and oxygen circulation in the body
  by increasing circulation. This practice not only allows for exercise, but it
  also helps to clean the water and air in the region. It may also help you
  learn more about nature. Furthermore, it might put you in contact with others
  who are interested in this style of fishing.
  Magnet fishing is a safe, ecologically beneficial, and low-cost activity. A
  high-quality neodymium magnet and a rope with the appropriate diameter and
  strength are required. A regular fridge magnet will not suffice. A magnet with
  a drawing force of at least 100 kilograms and a diameter of at least 70mm is
  ideal. Wear gloves and a nylon rope to ensure the safety of your magnet. You
  may also wish to invest in a grappling hook to help you bring in heavy goods.
  One of the most fascinating things about magnet fishing is that you never know
  what sort of fish it will attract. Some fisherman are ecstatic with any catch,
  no matter how little or inconsequential. Unfortunately, some fishermen have
  exaggerated expectations and are disappointed when they do not locate the
  greatest specimen. If you're a regular magnet fisher, on the other hand,
  you'll have a better time. You'll be able to spend quality time with family
  and friends while making memories that will last a lifetime.
  While magnet prices vary widely, these magnets are normally far less expensive
  than neodymium magnets. Some businesses even offer high-quality magnets for as
  cheap as $100. Make sure you choose a high-quality magnet that is both
  long-lasting and simple to use. Keep in mind that larger magnets cost more and
  are heavier than neodymium magnets. They will, however, not survive as long.
  You should always employ a durable retrieval device in addition to a powerful
  magnet.
Fishing locations
  You can fish with an electromagnet in a variety of locales. The
  electromagnet's electrical current generates a magnetic field in a metal. The
  battery and the number of coils in the brass wire impact the intensity of the
  magnetic field. The stronger the magnetic field, the greater the magnification
  produced by the magnet. The current drain of the battery is determined by its
  size and the number of coils. The more voltage required to generate the
  effect, the longer the wire. The more current that can be transmitted from the
  battery, the thicker the cable.
Magnets made of neodymium
  While neodymium magnets have a great strength, their power declines fast at
  high temperatures. As a result, a compass is required to determine the
  polarity of a neodymium magnet. A compass may be used to align the south end
  of a magnet with the north side of a neodymium magnet. This will tell you if
  the magnet is pointing north or south.
  Despite its tiny size, a powerful neodymium magnet is quite powerful. The MAG
  Gear neodymium magnet has a diameter of 60mm and a thickness of 0.6 inch.
  Because of its great drawing power (152kg - 335 lb), it may be used for magnet
  fishing. Its steel body and countersunk stud make it simple to install. It's
  also an excellent Father's Day present!
  Using a neodymium magnet for magnet fishing might be hazardous if the magnet
  gets entangled in anything nearby. A big magnet may get stuck on a dock or
  snag on a metal surface. Unlocking it might be difficult, particularly if it
  is submerged. Osenc, an American firm, sells neodymium magnets for magnet
  fishing.
  N52 is the highest-grade neodymium magnet, whereas lesser classes have various
  temperature ratings. The magnet's magnetic strength decreases as temperature
  rises. Neodymium magnets are available in a variety of strengths known as
  "pull power." The more the magnetic field that a magnet attracts, the stronger
  the magnet. Whether you're not sure if a neodymium magnet will function on
  your fishing line, don't use it for magnet fishing.
Magnetic fishing equipment issues
  Magnetic fishing equipment are not without difficulties. They may get
  entangled in the water or even be dragged downstream. When fishing using
  magnetic fishing gear, it's preferable to invest in high-quality, tangle-free
  rope. Magnet rope isn't as durable as other forms of fishing line, so choose a
  good one. To dislodge a trapped magnet, use a wooden wedge or a rubber mallet.
  Magnets may get entangled in immovable things. Rocks, dirt, and buried water
  pipelines are examples of such items. These immovable things may get entangled
  in the magnet and make fishing much more difficult than it should be.
  Furthermore, several customers have complained that their magnetic fishing
  instrument became trapped in the water, resulting in the loss of their catch.
  To prevent this issue, get a magnet with a force of at least 30 kilos.
  Magnet fishing is becoming more popular among fishermen. Although most
  individuals are nice and happy to share their experiences, disagreements
  sometimes occur. In these situations, rivalry or conflict may occur between
  rivals. If you're fishing with another fisherman, you could catch the same
  thing and pull it out of your own line. Regardless, these problems are
  avoidable if you follow the principles for safe fishing and a lifetime of fun!
  Magnets are highly strong and should be handled with caution. They may cause
  significant hand harm if not properly kept. When utilizing magnetic fishing
  gadgets, make sure you use adequate safety gloves. If you don't wear suitable
  protection, you might get trapped between the magnet and your discovered item,
  leading in severe bruising or broken bones. You should avoid utilizing
  magnetic fishing gadgets unless you are willing to take these dangers.
