Feedback needed about getting investors

[Kyle Penland]

I've been thinking of how to get outside investors to build my portfolio much quicker.  I'm not looking for real estate investors per say, just people with an inclination to make more money.  Your feedback is appreciated on this.  I've thought about finding properties, raising the 25% down from outside instead of funding myself and offering that person a 50% return.  For example.  200k property.  I need 50k to put down, so I raise that.  Pay on the property, and take no cash flow.  After 5 years or so, refi cash out and pay the investor 75k and they are out of the picture.  Curious as to your thoughts on this.  I realize there may be an issue when I go to refi that the property may decrease depending on how the economy is, but I would write the contract to allow an extension of a period of time....What are the down falls you see?