Please select your home edition
Upffront 2020 Foredeck Club SW LEADERBOARD

Loop Woggle is 'The Daddy' in the world of genoa sheet leads

by Prinal Shah 5 Dec 2019 09:00 UTC
'The Daddy' in the world of genoa sheet leads © LOOP Products

LOOP Products are a German brand who pride themselves in sailing hardware innovation. Formed in 2005, the LOOP Products range is the brainchild of Kohlhoff GmbH - to learn more, read the previous blog.

In this blog we look at the trend towards lightweight, flexible sheet lead solutions and why the LOOP Woggle is working its way to the top of the pack in high load situations.

Flexible, adaptable line / sheet leads

Sheet deflectors, tweaker lines, barber haulers, in-hauls, outhauls... there are many applications onboard which require a loaded line to be deflected, to achieve the correct sail clew location or lead into a cleat.

With the introduction of single braid Dyneema® and low friction thimbles, creating lightweight systems to optimise your line angles has never been easier. Single braid Dyneema® is super strong and very quick and simple to splice. The low friction thimble is spliced into the end of the lead line and the loaded sheet/line is run through the centre. These systems are so light that they can be permanently installed, so they are always available to make minor adjustments to optimise trim.

Regardless of what you actually call them, lash thimbles, ferrules, low friction thimbles are really useful for relatively low load applications because they are small and lightweight. As loads increase however, a better strength to weight ratio can be achieved using low friction, solid rings. Here the lead line is spliced to the ring and the load line then runs through the centre.

The downside with rings is that they have a relatively small contact area with the loaded line, and a relatively tight radius which has a couple of implications: a) it is quite an aggressive contact surface which can lead to rope damage and b) the loaded line can grip onto the inside surface of the ring, increasing friction.

Enter the LOOP Woggle

To combat these obvious downsides, as load line increases, LOOP Products developed the LOOP Woggle. This is a classic example of the type of cool, niche products which are often developed within the marine industry.

The LOOP® Woggle is a heavy duty sheet deflector made of hard anodised aluminium. They are available in 5 different sizes and different shapes for SWL from 1000 - 6000 kg and control lines from 10-14mm. See the table below.

The simple secret to the LOOP Woggle is its length and gentle internal radius.

The increased contact surface reduces point loading and damage to the rope. Whilst you might think that this larger surface would increase the friction, the gentle radius actually provides a much better surface for the loaded line to run over. The interesting thing with a Dyneema® covered line is that friction actually reduces as load increases. The exact reasons why, are best left to the material scientists, but the result is that under higher load the longer contact area allows the Woggle to slide over the line more efficiently than through a ring with a large internal radius.

Niche application

One unique application of the LOOP Woggle, that we are aware of, is on some TP52 forestays. These high-performance composite fibre forestays are built with a Woggle permanently installed on the cable. It is free to slide up and down the cable but constrained by the end fittings.

Its purpose: it acts as a tack shuttle. The tack of the headsail is attached to the Woggle and once the sail is hoisted a tack line is used to adjust the luff tension in the sail i.e. it acts as a floating tack.

Even with the very high sheet loads, the woggle ensures that the composite cable is undamaged, and it will actually move up and down the stay, under load.


The LOOP Woggle is a simple, clever, cool little product which has evolved to make the most of modern materials and create lightweight onboard systems.

More information or need a quote?

If you have any questions about sheet deflectors or you would like to get help with any aspects of the deck layout of your boat, you can contact using this form.

Related Articles

Improve Your Sailing Performance
Three simple, cost-effective upgrades from Reducing weight should be every sailors goal, no matter what their sailing style. One kilogram removed from the mast and rigging package is equivalent to adding 4kg to the keel. So, reducing weight aloft increases your stability. Posted today at 5:00 pm
Stripping and recovering yacht ropes look at when, where and why The majority of yacht ropes are double braid construction i.e. with a core and braided cover. The purpose of this cover is to protect the core from general chafe, abrasion and UV damage but also to provide grip. Posted on 23 Sep
Alphalock Halyard Locks
Simply the best? A close look from The Alphalock brand is a relative newcomer on the sailing hardware scene but its CEO, Eric Hall - founder of Hall Spars and inventor of their renowned Hall Autolocks - is anything but "the new kid on the block"! Posted on 17 Sep
Sailboat Hardware Soft Attachments
Fad or paradigm shift? There is an increasing trend towards soft attachment of sailing hardware and rigging i.e. using a lashing or soft loop, however they are not a catch-all solution. Posted on 10 Sep
Live Rig Load Data at Your Fingertips
Cyclops Marine Smartlink reviewed by In a previous article we looked at the benefits of having live forestay load data using the Cyclops Marine Smarttune load sensor. Now we take a closer look at the sister product, often used in combination with the Smarttune, called the Smartlink. Posted on 3 Sep
An Innovative Twist to the Stick-on Padeye
LOOP Products available at Padeyes are a multi-purpose attachment point, traditionally made of steel and bolted directly on to the deck. With a significant shift to soft connections over the last 5-10 years, the humble padeye has been through its own transformation. Posted on 28 Aug
Nine uses for Millionaire's tape
Excellent value for money, despite the name PROtect Mask, commonly known as 'Millionaire's tape' in many sailing circles, has been an essential part of riggers toolkits for years. Posted on 21 Aug
Evolution in the DNA look at the Morf Block options now available Morf Block - the brainchild of Morfrac Systems - is constantly evolving. Once a DIY block, where the user was free to use the lash thimble of their choice, Morf Block is now available ready-to-run, optimised for either high performance or high load. Posted on 17 Aug
Sailboat Load Data
Optimising hardware and rigging design Find out just how far we still have to go in terms of understanding yacht mast and rigging loads, and why they are so important to the specification of sailing hardware and rigging systems. Posted on 30 Jul
Replacing Karver's Furler Quick Release Spring Kit
Captive pins are almost universal on furling drums and swivels The quick release mechanisms rely on small springs which can get damaged and require replacement. This article will outline the evolution of the Karver captive pin systems and help you identify the correct replacement spring kit for your Karver furler. Posted on 25 Jul
Upffront 2020 Foredeck Club SW FOOTER