When I tested the Huntsman's Bow, I was using my secondary character. Learned a very important thing. Not only does Bow skill affect the Stamina drain, it has a huge effect on draw time itself. Something I hadn't considered. With my 1000+ hour character the draw time on the Huntsman's Bow feels identical to the Draugr Fang. It's quite usable. With any bow you'll always have to compensate for arrow drop over distance. How much is something only experience can teach you. I looked at the Noise info on the Valheim Wiki. The Huntsman's Bow is indeed quiet, but NOT silent. It generates 4m of noise when shooting/hitting. All other bows are 15m/8m. I didn't see anything about a hidden stat for the Huntsman but... it might not be advertised it it's "hidden". I'll have to give it another look with my high level character. Regardless, if you want success with the bow, practice practice, practice. Raise that Bow skill level up!