Welcome @Scott Turner!!! I and @Kinley Puzey are also B-town residents.
You are VERY correct in your Utah analysis. The prices are high and the returns... well, you've run the numbers. Now, don't get me wrong, there are deals to be had. But for us beginners, those deals are usually gone before we can get to them. I've been looking in AZ, MI, and FL. I've found some good deals with good cash flow. Tennessee is another area I've heard being mentioned a lot as well.
I can't speak to using a HELOC to fund a property, but, I know it's done. And I believe I've heard the one and only, @Brandon Turner, say he's used a HELOC, but I can't be 100% positive on that. Others have taken vested 401k's, rolled them over to self-directed IRA's, and used that money as well. My wife and I have quite a nice chuck of change in an old state retirement we're looking into rolling to do just that. @Jerry Padilla also raises another good option.
Leverage is a good thing. Either via HELOC, cash-out refi, or self-directed IRA. Using available funds that are just sitting around to reach your financial goals is never a bad idea.
All the best,
Aaron