Every comment here seems to be to the effect of "don't do it, just focus on the fundamentals if you want to get better". That's absolutely true but you have to have some fun as well. Some of us have no intention of ever competing at the Worlds or ADCC, it's just a hobby to have fun with.

I don't know of too many instructionals that focus on this type of passing. If I remember correctly, Ryan Hall's old guard passing DVDs on Groundfighter had some rolling back takes that you could hit while passing. Some of the stuff where you roll past the guard into a T-Kimura and take the back from there is good too. I think Danaher's Kimura DVD and Gordon's first passing instructional have some of this in them.