If you have access to HNW affiliation organizations (like Family Office Exchange (FOX), Institute for Private Investors (IPI), Family Office Association (FOA), Ask The Circle, Tiger 21, etc.), they often have some sort of a forum for allowing members to pitch / present investment ideas to the other members. Just went through many months of presenting to those groups (among others) to raise my own very specialized fund. Found that the pros to those organizations are 1) access to highly qualified investors, 2) explicit recognition that these fora were to exchange investment ideas / products. Cons are that they deliberately limit what can be said and the audience, while qualified, can be comprised largely of hand sitters and browsers rather than people with an actual interest in investing (too many second and third-gen wealth holders scared to their wits about losing daddy's or granddaddy's money to actually make a decision). That said, if you get one, it's all worth it.
We had more success with the unglamorous shoe-leather work of reaching out to friends and then friends of friends, etc., etc. Once you have one evangelist, often, you'll find a number of other friends latching on - really takes one catalyst to make it work.
You could also try to get onto the platforms at some of the multi-family office admin / concierge groups (Genspring, for example). Tough without a track record, but there is often also a possibility that while you might not make it onto the platform, there might be a couple of families who take a private shine to the idea and move forward with you.
One caveat - it is a really rough market out there. As we've told a couple of reporters who have written about our fund, our biggest competition for capital was the mattress. While not shell-shocked like they were in 2009, the Euro-gyrations of Q4:11 certainly didn't help anyone's psyche...there is still an abundance of caution, not matter what you hear about interest in alternatives / real assets / alternative alternatives, etc.
Good luck and PM me if you think I can be of any help...