The components, Slayer 5.0, mast 4m constant flex 13.5, boom 150:


Feed the mast sleeve from the boom opening is easier:


Setting the extension:


Checking the extension setting, it is 20.6 cm in this case, not 20 like the marking on the extension says.


Feed the down haul rope through the pulleys so that the sail pulley can go down all the way and the lines do not cross:


You can use the allen key to downhaul:


Downhaul setting: The downhaul gauge is the batten above the boom without the boom attached.
-For a light wind setting the batten tip should line up with the front of the mast, this makes the sail very grunty but still remains stable and depowers well on the wave.
-For a medium wind setting the batten tip should be resting half way on the side of the mast
-For high wind the batten tip should only just touch the mast:


Setting the batten tension: When your sail is new, you may need to add batten tension if there are wrinkles visible:


Tension the batten by using the supplied allen key till the wrinkles disappear:


Note there will be some wrinkles at the top of the PVC window:


This is intended, since PVC stretches more under tension than X-ply, it is mounted under tension in the sail, creating wrinkles in the surrounding X-ply when the sail is not tensioned. This makes sure the PVC does not lose shape under tension. Since there is less outhaul tension, the remaining horizontal wrinkles remain visible untill the sail fills with wind.

Setting the boom:

Setting the boom to average length for average setting

For an average setting with the boom head in the middle of the boom cut out, choose the average setting marked on the sail, in this case 164cm. The indicated min and max boom lengths are for the shortest and longest possible boom setting, the longest setting is boom head at the top of the boom cut out and high wind setting, the shortest is for the boom head at the bottom of the boom cut out and the sail set for low wind. With the boom head set at the middle of the boom cut out, the range is 2cm less at either end.

The minimum indicated boom length is the low wind setting with the boom mounted completely low, the longest indicated boom length is the high wind setting with the boom mounted high. Since the needed boom length varies on the highth it is mounted on the mast: When the sail lies flat without wind, set the boom between 1cm (low wind) to 2.5cm (high wind) longer than the clew of the sail and then outhaul this amount. When resetting the sail always set the down haul first and set the outhaul accordingly.


The clew has 2 eyelets. Use both eyelets for an average setting. This is also the safest setting for if there is a heavy shorebreak.
You can choose the lower eyelet for shorter people and higher winds (more twist) and the higher eyelet for taller people in lower winds (less twist).


Final checking of the settings:
The batten above the boom should now be:

Low wind, half way the mast:


Medium wind, just behind the mast:


High wind, 2.5 cm behind the mast:


Final checking of the settings:
The batten above the boom should now be:

Light wind:


Medium wind:


High wind: