I was practicing DI + Momentum Cancel with ZSS earlier today.
Well, surviving in general.
I was messing around with Boost Pivoting side+b to brake the non friendly momentum, to live longer when beeing sent away horizontinaly, but I guess it isn't that effective ;\
(It MIGHT get, though)
But, I found that in some situations, while beeing sent horizontinaly, Boost Pivoting side+b is effective.
You can get slightly closer to the stage than if you don't Boost Pivot side+b.
(Considering in both methods you don't DJ after the Uair)
I'm a little confused, though.
The proper timing for the side+b (not talking about Input-Timing) is very weird.
You guys should mess around with it and see if you can find something interesting.