He wouldn't. Snake Man was the correct answer to Katakuri.
Bound Man would have hit Katakuri a few times in 30 minutes, but then? The timelimit would end, making Luffy a sitting duck in result. And besides, Bound Man did a 3 combo on Katakuri who had no composure and did nothing else but trying to block each hit with his Block Mochi.
Bound Man would still extremely struggle with Katakuri's Awakening. Sure, he'd perform better this time but he would barely hit Katakuri while the latter has easier ways to hit a bigger target with his peerless donuts.
Bound Man would have hit Katakuri a few times in 30 minutes, but then? The timelimit would end, making Luffy a sitting duck in result. And besides, Bound Man did a 3 combo on Katakuri who had no composure and did nothing else but trying to block each hit with his Block Mochi.
Bound Man would still extremely struggle with Katakuri's Awakening. Sure, he'd perform better this time but he would barely hit Katakuri while the latter has easier ways to hit a bigger target with his peerless donuts.