naked future options with IB IRA account

Can we sell naked future options (unlimited risk) with IRA account? Can we use span margin in IRA account?

 

Yes and yes.

 

So we can sell naked calls for future options?! According to IB website, we can only sell cash-secured naked puts, but not naked calls for stock options.

 

There are no any restrictions on futures options except SPAN-based performance bond requirements.