Checkbook LLC Operating Agreement Importance

[David Garcia]

Hello all,

I am looking to create a checkbook LLC to start investing in tax deed auctions within my Self Directed Roth IRA.
*I understand whatever advice given will not constitute as legal advice and, consultation with an attorney will always be recommended over sourcing information over the internet;*
however just wanted to gather some basic information from persons without vested interests before I consult with my attorney.  

Do any of you with SDIRAs utilize Checkbook LLCs without operating agreements?
Is it even necessary to have an operating agreement drafted for the checkbook LLC if its only purpose is to write checks?  
What are some worst case scenarios that could happen if an Operating Agreement is not used?
Any good leads on online Checkbook LLC operating agreement templates I could have my attorney fine tune if need be?

Thank you and all input is greatly appreciated.