Does anyone have any tips on how to find the right guys or methods that you use to vet people? 

What other methods should I use to acquire another property? 

Cash for keys is definitely the best way to get people out in the day when I was very active at court houses steps cash for keys was by far the best way to get folks to move and bad tenants in a state with bad eviction laws to me would be the preferred method. you simply pay them when they are leaving the house not before.. that works fine and you give them more than 1k .. you make it worth their while..

What is your real concern? 

Quote from @Tony Schmucker: Quote from @Wale Lawal: @Tony SchmuckerFrom my experience of working with over 400 investors, your strategy to relocate, house hack, and transition properties to management is a strong, methodical approach.

BUT WAIT, there's more:  Then when I hit submit, I got a message "your payment method has been removed successfully. 

If you hire someone typically they are the ones providing this information, but if someone is paying you, then yes they need this information for tax purposes.BTW - I would say your SS# has been hacked so many times and is on the black market already this is why we monitor ours through other parties or just lock it down at experian and other agencies if you are concerned about it.

Under this method each investor has ownership and voting rights.

BRRRR method is also a great way to go - good luck!  

He uses poorly thought through methods, I've listened to his "methods",  Thus, he has the high amount of  Due On Sale called in a short period of time.