Such is the case for the 3.5 spinner craze. But trends change and often for a good reason. Those large spinners like the old T-Spoons and Cascade #7s will still produce just like they always did. Finally, there is some speculation that the thump generates additional attraction as it sends low frequency sound waves out into the water. For those who could recognize these ‘slack-line bites’ the time to set the hook had been signaled.
Second, and probably more importantly, if the thump stopped and the line went slack-even a little-you knew your spinner had likely been pick up by a salmon headed toward your boat. You knew it was time to reel it in and clear the mess. The thump would change or stop entirely if the spinner got fouled with weeds or even on its own line. First, if it was thumping, it was working. The ‘thump’ accomplished a couple of vital functions. Anglers who were in the know wanted to see their rod tip bouncing to the beat of the spinner blade as they trolled the rivers and bays in pursuit of king salmon. Not so long ago spinner fishing for salmon was a matter of large spinners with a distinctive ‘thump’.
