I do not recommend buying the sail kit if you do not also purchase this furling kit. It is a necessity as how else are you going to pull the sail in when you are out on the water. That being said, you will have to be careful reading the instructions when you install the kit. Pay close attention as to where you should mount the fairlead as this in my opinion was the most challenging part of the installation. There are some videos online that may help you with the installation, otherwise leave it up to the pros.
This makes the sail kit much easier to use. Normally you have to go to the beach to furl in the sail. But with this kit you can simply furl it in or out on the water. The kit is not the easiest to install. In particular you have to make sure that the teeth on the wheel on the mast secure the lines tightly or they will slip while you are trying to furl the sail. I use this on my Oaisis and it is definitely a great purchase. If you are getting the sail kit I suggest you get this kit and the ama kit.