Refer to my post following yours.Ranes said:That doesn't explain how he's going to locate his opponent's weak spot, in order to sneak attack, from 'one hundred feet or more' away.![]()
Ie, spot check. Assuming that within 30ft it's automatic to pick out such a spot, the DC can't be more than 20 to locate such a spot at a distance of 100ft.
EDIT: Upon seeing your edit, it is probable that the rogue can only put an arrow/bolt/thrown weapon with sufficient precision, due to air current variances and such within 30ft.