Best advice I received was to put time and effort into recruiting each JV partner individually. Researc the key players in your market, read their websites and apporach them with an understanding of their business, quite their products and tell them why it will work for them and what you can offer them.

Fair enough have some stats and info in copy and paste form, but give a unique introduction to yourself to everyone and write a unique email to them basically. Since I started doing this I got some really good responses from the people I was mailing