Otter Boards are wonderful old inventions, not so commonly used these days, but when used correctly they can be extremely effective for Poaching Fish and Trout Poaching in Lochs. There are many varying designs of them and are quite lethal in the hands of a Poacher.
If any member is interested in talking with this old 80 year old successful Poacher from the Highlands of Scotland, please message me and i will gave you his email address.
Also as a licensed Punt Gunner he had a number of successful seasons using these type of guns
"Jock the lad" is in his 80th year and unfortunately he is no longer active in the "art" of
"Otter boarding" now but can give you a world of advise on using this instrument which is very easy to make and would only cost a few dollars to make plus a few hours of your time.