I have an (excellent condition) Harken Hoist storage system for sale. If you need to raise a kayak to the ceiling this is a great way to do it. One line pulls all four corners of the lift at the same time. It is a bit tricky to install but if I could do it you probably can. Only reason I am selling it is we had our garage re-done and I got a new system. I had a Native Ultimate FX15 tandem hanging on this with zero problems so it holds heavy boats.
I have lag screws and extra 2x6 pieces of lumber I will provide as well. Located in East Dallas and would consider meeting in DFW area within reason.
I dont have a picture on hand but here is a link to their site.http://www.hoister.com/productdetail.aspx?id=46400&taxid=645
Retail is $130 and I will take $50.
Lemme know if you need it.