I am redoing my garage, and putting the kayaks on the wall. I have a hoist system that I am taking off the ceiling and selling. I have had it for 5-6 years, but have had my yaks on stands on the garage floor taking up to much room.
These work best if you have an open rafter ceiling, as the give you a little more clearance, or you can attach a 2 x 4 to the ceiling like I did and attach the hoist to the board. These work great, and hold up to 100 lbs. They retail for $60, but I will sell them for $30 OBO.
Here is a pick from their website. I have all the hardware, straps and rope that came with it when I purchased them.
You can see the product and more pics on their webpage.
http://sportssolutions.com/inc/sdetail/418
PM me if interested.
Brian