Fishing reel opening the face of the reel allowing the line to run off the side of the spool when released in the cast. The centrepin reel is historically and currently used for coarse fishing. Instead of a mechanical drag, the angler's thumb is typically used to control the fish. Fishing in the margins for carp or other heavy fish with relatively light tackle is very popular with a 'pin' and is often used for 'trotting' a method in which a float on the line suspends a bait a certain depth to flow with the current along the waterway. During the 1950s
Ice fishing sturgeon fishing. In the United States many states allow only rough fish to be taken while spear fishing. Becoming increasingly popular is the use of a flasher, similar to its summer cousin the fishfinder . This is a sonar system that provides depth information, as well as indicating the presence of fish or other objects. These flashers, unlike most typical fishfinders, display the movement of fish and other objects almost instantaneously. The bait being used can often be seen as a mark on the flasher, enabling the angler to position the bait right in front of the fish. Underwater cameras