Ways I would combat the rush defence:
1, Grubber or chip kick, but this can be pretty low percentage
2, Inside ball to the blindside winger or a back rower. Timing has to be perfect here though, because you want the receiver to be running at full tilt to create the mismatch
3, Quick ball at the ruck and pick-drive around the fringes for a few phases to get the defence moving backwards or creeping offside (thereby getting pinged)
4, Stand deeper, though this runs the real risk of being caught behind the gain line
5, Moves down the blindside to keep the defence guessing
6, Quick ball wide, using the cutout, flat pass or some other method. Basically what Antimony said upthread.
7, Fullback running into the line on an angle at pace