Actually, there are a few factors involved. The wobble plate (or lip), if there is one, and that can also be bent slightly to make the plug run shallower or deeper. The shape of the plug itself... also the speed/type of retrieve, slow, fast, side to side sweeps w/ the rod, herky jerky retrieve...and, finally, the way the plug is weighted plays a part...but you can change the nature of that "wobble" by the way you cast into or across a rip. The angle the plug travels through the current alters the action. As an example...the charter skippers who fish Sow & Pigs reef off Cuttyhunk would back down their bass boats and drop in big danny plugs on wire line. When the plugs were working correctly, there'd be a kind of thrumming action that you could feel...that's how they knew the plug was wobbling correctly...too shallow, too deep or wrong angle with the current (or a plug that wasn't "tuned" properly) and there'd be no hits. Get it working right and BIG bass would slam the plug. That's why it's important to test a plug by pulling it through the water to see if it has the proper action (or wobble)...
Jerry Vovcsko,
moderator
East Bridgewater, Ma