That's fertile ground for mass surrender and defections. 

In case anybody argues with you, the statute is Section 40-10-74, which says: "Any purchaser of lands at a tax sale other than the state or anyone claiming under him shall be entitled to possession of said lands immediately upon receipt of certificate of sale from the tax collector; and, if possession is not surrendered within six months after demand therefor is made by said purchaser or his assignee, the said purchaser or his assignee may maintain an action in ejectment or a statutory real action in the nature of ejectment, or other proper remedy for the recovery of the possession of the lands purchased at such sales and shall be entitled to hold the possession thereof on recovery,"You cannot just throw people out on the street.  

1) Cash for Keys and getting the tenant to acknowledge the surrender for keys in writing.2) Use a short period lease (3mo) which defaults to a m/m  continuance. 

You're surrendering power to an agency that asks you to jump and your answer is how high.

As other posters wrote, there is such a thing as a voluntary surrender and repossession which does not require court in most states, and if the operator knows what they are doing 90+% will be voluntary.

Hopefully after the enormous surrender time has passed.