Equipment, batters box

[BSBAL18]

Q1) bucket of ball outside of dugout of both coaches. Ball is thrown by def and 1) strikes offense bucket or 2) hits defense bucket. Dead ball immediately. Is the result both the same? No further advancement?

Q2) ball is batted poorly and stops inside batters box. Is the batters box relevant after the batter has ran out of it? So the call would be fair/foul depending on umpire judgement since the foul line isn't drawn the last two feet at the plate.

Q3) there is no visible front line of batters box. Hitter seems to be awfully far forward, but w no line I can't call him out for being out of box. Is there anything I can do?