My first flip (May 2016) used our HELOC. We started small buying a $65k home in Mount Holly NC. The rehab budget went over but we learned a lot about the process. Our exits were to sell or worse case rent. After reading above @Sam Ally
"Not to be melodramatic, but with the wrong combination of forces I could not only lose the flip but my own home too since I took out the HELOC to do this."
I kinda chuckled. This ran through my head too but I reasoned that if they took my primary I still had a house I owned out right. Oh well, the flip turned out great and we made money.
My second flip (Oct 2016 still going) was purchased with a combo of Hard Money and proceeds from the first flip. This helped us manage the risk with our HELOC. We should have this one back on the market in about 10 days and then look for another.
I am interested in other creative funding options, but have not tried one yet. I had one verbal deal where I was going to put 8 months of a homeowner's mortgage payments in escrow and take profits over a predetermined amount after rehab and sell, but the homeowner could not wrap his head around the deal.
Anyways, always looking for ways to use less of my money or leverage my money to do more deals.