He spots the follower before it turns
A big pike rarely commits on the first pass. It shadows the lure, hangs back, and decides in the final second. Miss that follow and you'll never know the fish was there — anglers describe it exactly that way: "A pike can be feet away from you and you will never see it."
The enemy is glare — the white mirror on the surface that hides everything beneath it. Sean's copper lens kills that mirror and lifts contrast, so the shadow of a following fish separates from the bottom early — early enough to change your retrieve, drop a twitch, and trigger the eat. It's why anglers who switch say the same thing: a real lens "help[s] you see the structures that other anglers miss."
That's the difference between a story about the one that followed — and a photo of the one that ate.