![2942](./gallery/image.php?mode=thumbnail&image_id=2942)
The image shows the end of my boom. The (x) marks the spot where there's an eyestrap on the opposite side for the reef line. The outhaul goes forward from the end (on the side not visible in the photo) to a V-cleat partway along the boom. The location chosen to where it can be reached under way. (The free tail is attached to a thin bit of bungee cord pulling it forward to lift it out of the way, but that also means the outhaul can be grabbed along the entire length of the tail)
The 3:1 purchase uses a shortcut: one turning block is replaced by looping the outhaul back through the grommet. The alternative would have lost adjustment range, but the downside is increased friction. The latter has proved acceptable in use.
Hope this gives you an idea.
(My boat is a DS1, but in that respect there's no difference between the models)