Buy, Rehab, Rent, Refinance, Repeat. See how much of your money comes back at the refinance and what the rental earns afterward.
Most investor lenders allow 70–75% of the appraised value on a cash-out refinance, and many require you to own the property for 3–6 months first (the seasoning period).
Buying far enough below the after-repair value that 75% of the ARV covers the purchase and rehab. If it does, nearly all of your cash comes back and you still own a rental.