About us

This is a website of Poseidon, distribution company of fly fishing and related items, and brand owner of Monomaster. Poseidon is based in the Netherlands and run by Bert Vosters.
This is the world distribution website for the Monomaster tool. We only sell to retailers and distributors. For country specific distributors, see the distributors page under 'where to buy'. In countries without a distributor we sell dealer direct. Custom printed Monomasters we always sell dealer direct.


Bert at his home River Waal

Bert: ‘Fishing is a wonderful pastime. A great hobby which brings you understanding and love of nature. It makes you aware of the impact of your actions on your immediate surroundings as well as on the environment in general. When I came across the Monomaster I realized that this little gadget is a blessing for small animals and fishermen alike. It prevents accidental loss of used nylon and other fishing line and helps to keep our environment (and trouser pockets) clean. Waste fishing line takes hundreds of years to break down and in the meantime it can be a deadly trap for small animals. Anything that helps to prevent that is very valuable. That is why we started distributing the Monomaster to our fly fishing dealers, and that is why I set up this website, dedicated to promoting the use of the Monomaster further, to fishing clubs, environmental organisations, fishery owners and indeed all European fishermen and -women.
In 2019 we acquired the Monomaster business from the previous owner Ian White. This gave us the chance to distribute and promote the use of Monomaster across the whole world. With our first 'own' production run we changed the
plastic blister packaging into a recyclable cardboard box, which is much more eco-friendly. We hope more and more fisher persons will start using Monomaster or similar products, so we all work together on effectively preventing fishing line pollution. This nice little product makes it a bit easier for everyone to live by the adage ‘Leave nothing but footsteps, take nothing but pictures’.’