Speed leads happen mostly in one lane, and they go faster than their parent current. Lane changes are exactly what they sound like — the fly is traveling in one lane, and then we deliberately bring the fly over to a nearby lane and travel down that one.
The speed lead is a term coined by our friend, Josh Stewart. Way back in 2017, I published a few articles about low-riding streamer presentations, with streamers tied on lead ball jigs. I’d gotten the idea from Rich Strolis, and it was a bit of an underground thing at the time. I remember that Stewey got in touch after reading my article, and we started sharing ideas and presentation styles with some of these flies. When I described leading low but faster than the current, Josh said he called it a speed lead, and it was one of his best tactics for stirring up big trout . . .