This strategy needs a line of credit as the hub, and that raises a practical question: which kind? For most homeowners the choice comes down to a HELOC, which is secured by your house, or a personal line of credit, which isn't. The differences are bigger than they look from the outside.
The HELOC's case is mostly price and size. Because the bank holds your house as collateral, the rate is usually meaningfully lower and the limit meaningfully higher. Big enough to hold a real chunk plus a month of expenses without crowding. For running the full strategy, chunks included, the HELOC is usually the better machine.
The objection you're already thinking of is fair: it puts your house behind the debt, and that deserves respect instead of a wave of the hand. Two things keep the risk contained. First, the strategy never adds new debt. It relocates debt you already carry while your cash flow shrinks it. Second, the never-max-the-line rule keeps a cushion between you and trouble at all times. Still, if the existence of that risk would keep you up at night, listen to yourself. Peace of mind is a real return too.
The personal line's case is speed and simplicity. No home equity required, so renters can use one. No appraisal, so it opens faster. The trade is a higher rate and a smaller limit, which makes it a fine starter hub for paycheck parking on its own, and a cramped one for chunking. Plenty of people start there, prove the habit for six months, then graduate to a HELOC once the routine is boring.
Either way, remember the line is just the container. The engine is your monthly surplus, and no choice of container fixes an engine that isn't running. The full mechanics are on the How It Works page, and the wider money picture, including whether this strategy fits you at all, lives at Oregon Cash Flow Pro.