Issues with Sandwich Lease options or Options?

What issues may rise with both sandwich lease options as well as straight options? I’ve heard of seasoning issues and title insurance issues; how can these be avoided? Also, I know not everyone can pay the assignment fee and most lenders won’t lend on assignment fees. How can one collect their fee?

Thanks in advance.

-Alex

I’ve never heard of a sandwich option. when someone answers the question, can you also explain what a sandwich option is? Thanks!

im doing sandwich lease options with land trusts and ive mitigated those known issues.