Editing Trolling (fishing) (section)

==Line-spreading trolling devices==
[[File:Trolling for bluefish2.jpg|thumb|upright=1.4| {{center|"Trolling for blue fish" [[lithograph]]<br />by [[Currier & Ives]], 1866}}]]

===Outriggers===
[[Outrigger]]s are poles which allow a boat to troll several lines in the water without tangling. A boat which trolls enough lines can simulate a [[Shoaling and schooling|school of fish]].<ref>{{cite book| last= Ettingshausen | first= A | year=2006| url= | page= [https://books.google.com/books?id=OSmNuxANbV8C&pg=PA143 143]| title= Fishing for Beginners| publisher= Pan Macmillan Australia | isbn= 978-1-4050-3749-5 }}</ref><ref>Slatter SO [http://www.freepatentsonline.com/6668745.html Outrigger assembly] United States Patent 6668745, issued 2003.</ref><ref>Francis ER [http://www.google.co.nz/patents?hl=en&lr=&vid=USPAT4858370&id=rFE3AAAAEBAJ&oi=fnd&dq=+school|schooling|shoal|shoaling+outrigger++troll|trolling++&printsec=abstract#v=onepage&q=school|schooling|shoal|shoaling%20outrigger%20%20troll|trolling&f=false Fishing lure for simulated feeding] {{Webarchive|url=https://web.archive.org/web/20110926210112/http://www.google.co.nz/patents?hl=en&lr=&vid=USPAT4858370&id=rFE3AAAAEBAJ&oi=fnd&dq=+school%7Cschooling%7Cshoal%7Cshoaling+outrigger++troll%7Ctrolling++&printsec=abstract#v=onepage&q=school%7Cschooling%7Cshoal%7Cshoaling%20outrigger%20%20troll%7Ctrolling&f=false |date=26 September 2011 }} Patent number: 4858370, issued 22 August 1989.</ref>

===Downrigger===
[[Downrigger]] are devices used while trolling to keep a bait or lure at the desired depth. In practice, fish swim at different depths according to factors such as the temperature and amount of light in the water, and the speed and direction of water currents.<ref name=Moritz>Moritz AJL [http://www.google.co.nz/patents?hl=en&lr=&vid=USPAT3897648&id=_kc2AAAAEBAJ&oi=fnd&dq=troll|trolling+fish|fishing&printsec=abstract#v=onepage&q=troll|trolling%20fish|fishing&f=false Trolling line sinkers] {{Webarchive|url=https://web.archive.org/web/20110926210122/http://www.google.co.nz/patents?hl=en&lr=&vid=USPAT3897648&id=_kc2AAAAEBAJ&oi=fnd&dq=troll%7Ctrolling+fish%7Cfishing&printsec=abstract#v=onepage&q=troll%7Ctrolling%20fish%7Cfishing&f=false |date=26 September 2011 }} Patent number: 2645053, Issued: July 1953.</ref> A downrigger consists of a one or two metre horizontal pole which supports a weight, typically about {{cvt|3|kg}} of lead, on a steel cable. A clip called a "line release" attaches the fishing line to the weight, and the bait or lure is attached to the release. The fishing line is reeled in by a spool powered either by manual cranking or by an electric motor.<ref>Schultz 2009, pp. 219–220.</ref> Using a downrigger can be hazardous. For example, man-made reservoirs can contain submerged trees and other structures beneath the surface which downriggers can snag.{{Citation needed|date=March 2021}}

===Paravanes===
"Paravanes" (underwater kites) are sometimes used as depth controlling devices,<ref>Larson W [http://www.google.co.nz/patents?hl=en&lr=&vid=USPAT4486970&id=82wzAAAAEBAJ&oi=fnd&dq=troll|trolling+fish|fishing&printsec=abstract#v=onepage&q=troll|trolling%20fish|fishing&f=false Trolling depth controller] {{Webarchive|url=https://web.archive.org/web/20110926210126/http://www.google.co.nz/patents?hl=en&lr=&vid=USPAT4486970&id=82wzAAAAEBAJ&oi=fnd&dq=troll%7Ctrolling+fish%7Cfishing&printsec=abstract#v=onepage&q=troll%7Ctrolling%20fish%7Cfishing&f=false |date=26 September 2011 }} Patent number 4486970, issued 11 December 1984.</ref> particularly in commercial tuna fishing operations. These kites have various shapes, such as arrowhead paravanes, flexi-wing paravanes, and bi-wing paravanes.<ref name="fishing">{{cite web|url=http://www.fishing.sh/htmfiles/seabirds/danielsolander.html |title=Tuna Fishing an Underwater Bait Setting Device |publisher= | website= fishing.sh| access-date= 2015-08-31}}</ref> The devices can place the lure or bait at designated depths and positions; and in this way multiple devices can be towed at the same time without the devices and bait interfering with each other.<ref name="google">{{cite web|url= https://patents.google.com/patent/US2914884 |title=Patent US2914884 - Trolling device | publisher= | via=Google Patents |access-date=2015-08-31}}</ref>

===Spreaders===
"Spreaders" allow multiple baited hooks or lures to be trolled from a single line. There are many inventive spreader designs, such as devices which cause the baited hooks or lures to move in [[Helix|helical]] patterns, in a sophisticated emulation of the schooling behaviour of a group of fish.<ref>Barnett OL [http://www.google.co.nz/patents?lr&vid=USPAT4920687&dq=troll|trolling%20fish|fishing&printsec=abstract&id=GZQeAAAAEBAJ&output=text&pg=PA4 Rotating fishing lure spreader for use while trolling] {{Webarchive|url=https://web.archive.org/web/20110926210144/http://www.google.co.nz/patents?lr&vid=USPAT4920687&dq=troll%7Ctrolling%20fish%7Cfishing&printsec=abstract&id=GZQeAAAAEBAJ&output=text&pg=PA4 |date= 26 September 2011 }} Patent number 4920687, Issued 1 May 1990.</ref>

===Planer boards===
"Planer boards" are trolled devices designed to spread fishing lures out away from the fishing vessel. They allow multiple lines to be trolled. They come in dual board and inline board designs. Dual board designs consist of two boards that are spaced apart and attached by a line to a mast near the front of the boat with a separate fishing line in a spring tension release clip that separates when the fishing line is set. Inline boards are attached directly to the fishing line and a spring tension clip that releases upon setting or tripping the planer board so it slides down the fishing line to a swivel tied several feet in front of the lure. Inlines are popular with [[walleye]] and [[wahoo]]<ref name= "thetackleroom">{{cite web|url= https://thetackleroom.com/blogs/news/how-to-inline-planer-fishing|title=How To: Inline Planer Fishing | first=Timothy| last= Lewis|publisher= | website= thetackleroom.com|access-date= 2024-02-05}}</ref> [[fishermen]]. Once tripped they offer much less resistance when reeling in a fish.<ref name= "walleyecentral">{{cite web|url= http://www.walleyecentral.com/articles/?a=192|title=Tips For Using Inline Planer Boards | first=Julia (Juls) | last= Davis|publisher= | website= walleyecentral.com| access-date= 2015-08-31}}</ref><ref name= "howstuffworks">{{cite web|url= http://adventure.howstuffworks.com/outdoor-activities/fishing/freshwater-tips/walleye/walleye-fishing-techniques2.htm|title= Walleye Fishing with a Planer Board |date=20 November 2008 |publisher= | website= adventure.howstuffworks.com|access-date= 2015-08-31}}</ref><ref name= "planerboard">{{cite web| url=http://www.planerboard.com/how-to-use-a-planer-board-for-trolling/|title=How to Use a Planer Board for Trolling|publisher= |website= planerboard.com|access-date=2015-08-31|archive-date=18 June 2021| archive-url= https://web.archive.org/web/20210618141932/https://www.planerboard.com/how-to-use-a-planer-board-for-trolling/|url-status=dead}}</ref>
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