RE: HHA SIGHT
I have an Optimizer Lite and I love it. HHA sights are by far and away the best one pin sights I have ever had the pleasure of shooting. To answer your question, they do not make ANY noise while being adjusted. Yes, they can be adjusted quickly in the field, but the way I do it, as I'm sure most who own them do as well, is to leave it set on 25 yds. That pretty much covers most of my shots out of my tree stands. With it set on 25, I can accurately shoot from 5-35 yds. just by making simple adjustments on where I put the pin on the deer.