I can't really add anything more to answer your question than CrappiePro already has. However, the light bite isn't just with spider rigging. I've been trolling crankbaits the last two weekends and all I can say is they are barely hitting it. And they are crappie, we just couldn't get them in the boat, or close enough to the net. We lost as many as we caught and really not one decent hook up. Man was it frustrating to lose mainly the bigger fish. I've noticed this in past years too right after the spawn, seems like they are just kind of investigating the bait. But even an investigating bump with a treble hook is likely to snag them somewhere, lip or the side of the head, but not so much that they can't get off in some cases. My experience has been, give them a couple more weeks and they'll be hammering it like they really want to eat it.