wash down  
After a day on the beach always remember to rinse your kart & sail with fresh water. This removes the sand & salt which corrodes the frame and stiching. A simple task like this will keep your kart looking good for a much longer time than that of those who don't do it.
pully whip  
Pulley whips can break. If this happens it is possible to do a repair. By removing the spring clip, sawing off the damaged section, drill a new hole for the spring clip and replace the clip. Please remember if you are racing there is a mininum length of 350mm for performance class .
down haul  

Adjustment of the downhaul can make massive changes to your sail shape & therefore your performance. The less tension you place in the downhaul the more full your sail becomes. A full sail supplys more power but is less streamlined.

More downhaul will produce a flatter sail that in turn will have less power in light winds or at lower speed or but will be smoother through the air.

Blokart produce a performance downhaul as an add on. This allows the downhaul to be adjusted whildt on the move.