What Jake says is right, but if you dont want to go to the expense of having a system that can be controled while sailing make sure that you have one that at least works. If its windy, park the boat up stand on the tramp and whack loads of downhaul on and leave it. I seem to remember standing on the tramp and pushing the rope down with my foot whilst holding the tail was the way to go on the standard system.
You will find the 18.2 much easier to sail in a blow with lots of downhaul. Remember to let it off before you hit the beach, its a shame to see sailors wrestling a wild stallion onto its launcher when they have left the downhaul on.