Savage Gear US Cast Hacker is the strongest match for topwater in fast current because it’s a compact casting lure and the FS/XS guidance fits both falling presentations and more aggressive work when current is strong.
For the Savage Gear US Cast Hacker, cast across or slightly upstream, then use short twitches and pauses; in stronger current, work it more aggressively.
Switch away from topwater if fish are holding deep, the current is too strong to keep the lure in the strike zone, or you’re not seeing surface activity.
Switch to the worm or grub when you need a slower fall, bottom contact, or a bait that tracks better in moving water.