Although it seems that 3Fs (Friends, Fools, Family) are exactly the people you want to avoid when raising money, it might not be the case. Today, as the lean startup approach becomes popular, you need low amounts of money to actually a prototype. Professional investors would like to receive proof of traction and demand and are not investing small sums, so their money is not relevant in the first phase. Go for mature members of the 3f club after you explain the risk to them, and make sure that losing that money will not result in a painful blow for them (because that what will probably happen)