You'll get more out of it by waiting until 1sec is remaining on the timer, though my non-MNK geared MNKs with ~250STR were only able to see ~3k damage increase on WS. It's not utterly horrible when you are delay capped (6.4sec duration), but we shouldn't have to be calculating phys dmg formulas in order to determine if it's a damage gain or loss. It should be obvious. I am still curious what a geared up MNK would get out of it, but those are somewhat hard to find these days.

Also, I find it ironic that H2H (6.4sec) actually has a higher minimum delay/duration than DW (5.0sec)....