One Design Parts

 Four hole mount eyestrap for mainsheet blocks.

Made of durable, flexible PVC, stand-up boots holdblocks up without snagging lines. Fits 40 mm and 57 mm blocks  Zim Applications Opti: mainsheet block Harken Part # 369

Ring for boom bridle to clip mainsheet pennant onto. 25mm diameter x 3mm thick wire. 

 Opti Boom Bridle. Constructed with lightweight, low stretch Covered Vectran and a stainless steel ring.  

Zim protest flag, bright red flag deploys with a quick pull.  

An Opti hand bailer is essential for keeping your boat afloat and fast. Sail and bail! The square opening in our Opti bailer is great for getting every last drop out of your Optimist.  Lanyard included.

Optimist adjustable maststep with reinforced cup. This cup is improved in several key areas to make it more durable: The base and the round part of the cup are both thicker, increasing from 1.5 mm to 2 mm. The weld between the cup and the threaded...

Reinforced cup for the Optimist mast step. This version is improved in several key areas to make it more durable: The base and the round part of the cup are both thicker, increasing from 1.5 mm to 2 mm. The weld between the cup and the threaded section...

Airbag buoyancy aid for Optimist Sailboats from Colie. These Optimist buoyancy bags are made of polyurethane coated nylon and are about half the weight and significantly stronger than buoyancy bags made of PVC or PVC coated nylon. Buoyancy bags are...

Airbag buoyancy aid for Optimist Sailboats from Colie. These Optimist buoyancy bags are made of polyurethane coated nylon and are about half the weight and significantly stronger than buoyancy bags made of PVC or PVC coated nylon. Buoyancy bags are...

This sticker acts as a guide, allowing you to hoist and trim the sail to the proper level on an Optimist sailboat. Use Blue for Silver / Quicksilver Optimist masts Measures position of sail relative to the mast and boom

Specially made by the Zim Rigging Department for the top Optimist competitor, this is the ultimate 4:1 mainsheet block and clip. An upgrade over our standard mainsheet clip block, this assembly allows a 4:1 purchase which can be super helpful in heavy...