Methods

Bridge drop

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This is where the magnet is lowered straight into the water from a bridge and unless the magnet has attracted something of interest it only needs to be pulled clear of the water before lowering back down

Dipping

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Dipping is where you stand on the bank side and just keep lowing the magnet in the water's edge, this can also easily be done off the edge of a boat

Throw & walk

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This method involves throwing the magnet as far as possible and then walking along the waters edge so the magnet moves in a diagonal motion and so covering a larger area

Throw & pull

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This is simply standing at the waters edge and casting your magnet in the water and pulling it back in