by The Steelhead and Trout Fisherman
(Oregon Coast)
Check the clevice. If it's bent, fix it with a pair of needle-nosed pliers. The clevice attaches the blade to the wire shaft.
If the current is really slow, switch to a wider blade. It'll catch more water. If it's cupped at the tip... that will help as well.
Also, I'll crease my spinner blade length-wise sometimes as well. This will make a difference.
These are tips I've learned over the years that will hopefully help you out.
I hope this helps!