We have the Artic circles on our fans and they work great, we only use 2 mister tips. We also use a mister line in front of a row of fans, we have a Sullivan's Ice Box attached to it, we fill with ice and add water so the mister blows really cold water. The key like Stumpy said is to fine mist the calves without having a wet mess, you just have to play with it until you get it where you are happy with it, we have also done it on a timer system so they get almost dry and then it kicks back on.
For the equipment you can't live without thread, in the summertime this would come close to the top of the list!