Has anyone successfully transitioned to REIHub and found it reliable, or does it also fall short?

So, it's still a viable way of investing, but does not have the same scale of success in today's economic environment in higher appreciation markets.

—will be key to success!!

I would get the new tenant to apply and process it per your criteria.  

That said, targeting homes needing work or properties sitting unsold due to poor pricing can still yield opportunities—that's what I do successfully.

If your leasing application process is thorough and well thought out, and if your lease agreement has been well drafted by your local attorney and if it includes clauses that permit you/your property manager enough latitude to maneuver and anticipate undesirable tenant behaviors, both actions and inactions, and you have operational processes which align with enforcement of your lease, then you've done all you can do to reduce this inherent risk of an undesirable tenant.  

Im presenting myself as a honest and transparent person looking to build relationships and learn the process of flipping a home.

I can say from having taught classes on these loans that your contractor will be the biggest key to your success.

Your first couple deals will be important, they will set the stage for your success.

Success depends on the individual.