I realize that Jurco on the 4th line isn't ideal, but I'm very wary about using it as too much of a crutch either. Last year Stephen Weiss scored 25 points in 52 games on the fourth line. Kindl scored 13 points in 35 games with almost no ice time. Glendening had 12 goals from the fourth line.
He's got to get on the board. If he does that, he'll get an everyday spot. And if he has an everyday spot, the next time the lines need juggled, he might well end up with a little more icetime.
But he has to produce despite the limitations in playing time. It's not impossible, it's just hard. But we've seen it happen before.