Hi,

following question, I am trading the RUT

I had 3 April put credit spreads put on (short 620 and long 610) for a
credit of $100 each. When the RUT dropped too far down, I sold one
690/700 call credit spread against it for a credit of $500.

RUT went up all the way to 720 and today came down to a bit below 700.
That I used to turn that call position into a box by putting on the
April put 700/690 for a credit of $400.

So together with the 3x 620/610 put credit spreads I will do fine.

However, I have been thinking about Theta of my long box options and
wondered if I couldn't milk that position a bit more?
If I turn that box into what is called I believe a Double Diagonal and
move the long options further out in time, is that not a trade where I
can't loose?

If the RUT closes between 700 and 690, then I roll the short options
out too, otherwise I have to close.

Am I right in my thinking?

Many thanks for any help, gis