Using a HELOC and paying it back

[Johnny Vue]

Hi. I'm rather new to real estate investing and looking at purchasing my second property. I live in San Diego and it's expensive here. I have a few questions about using a HELOC to purchase an investment property. Besides paying more than the interest, what are other strategies to pay off the credit borrowed on the HELOC as soon as possible? I thought of doing a cash out refinance on my primary residence and use it to pay the HELOC bill, but would that be a smart move?