Debris

• Be cautious about using spinnerbaits around lily pads.Dynamic Graphics Group/Dynamic Graphics Group/Getty Images
  
  Debris is one cause of fouled spinnerbait blades. Tree stumps, lily pads, weeds and sticks are just some of the objects that may foul the blade. If the spinnerbait hits a foreign object, it may cause the blade to wrap around the bait and lose its action. Or the blade can foul when the bait hits a foreign object, causing the line to wrap around the bait.
  
  

Excessive Weight

• Don't use a bobber with spinnerbait.Hemera Technologies/Photos.com/Getty Images
  
  Putting sinkers that are too heavy on your line can also cause spinnerbait blades to foul. If there's too much weight on the line, the sinker will hit the water before the spinnerbait does. If this happens, the line between the sinker and the spinnerbait will wrap around the sinker as the spinnerbait and sinker sink in the water. The line between the sinker and spinnerbait can also wrap around the sinker or bait as they hit the water, also causing the blade to foul. Some spinnerbaits are heavy enough not to need sinkers. When using spinnerbaits that need sinkers, simply watch how the sinkers and spinnerbait hit the water to determine if you have too much weight on the line.
  
  

Improper Casting

• Leave your arm fully extended until the bait hits the water.Jupiterimages/liquidlibrary/Getty Images
  
  Avoiding improper casts is another way to prevent the blade from fouling. If you pull your fishing pole back before the spinnerbait hits the water, the spinnerbait can wrap around the line. If the spinnerbait wraps around the line, the blade and spinnerbait will be restricted from moving through the water with the proper action.
  
  

Knot Positioning

• Blade lures are similar to spinnerbaits minus the jig.Photos.com/AbleStock.com/Getty Images
  
  The positioning of your knot on the spinnerbait can mean the difference between getting the proper action or not, Dick Sternberg wrote in "The Ultimate Guide to Freshwater Fishing." Every spinnerbait has a loop where you can tie the line to it. If looking at the bait from the side as if it were swimming through the water, the knot should be 180 degrees from where the loop comes to the nose of the spinnerbait. If the knot is fixed to another part of the loop, it will cause the spinnerbait to glide through the water unnaturally, potentially losing its action and fouling the blade.