Well, I won't hop on the "binding with duct tape is so bad for you!!!" train, even though I want to, lol, because you clearly already know that it's not the healthiest choice.
But I will say, I was bothered by my binders a lot in the past (having that little bump), but I got over and it now feel a lot self-conscious, so I'll tell you what helped me. I realized that unless you have something that *clearly* resembles boobs (i.e. round, two of them) binding has very little to do with passing, for one. When I was smaller, binding never helped me pass even when I was almost entirely flat. Now I am a bigger guy, and my binder leaves a bump that to me looks huge, especially from above. But my perception doesn't reflect what anyone else sees at all. I saw myself on video and realized they weren't visible to anyone but myself, and that my passing increased when my shoulders got bigger and my voice got deeper. I also had a friend who said it looked like I got my chest surgery and that I had been working out, and that settled it for me and I stopped worrying. So I stopped hunching and stopped fretting over the bump because I realized it in no way marks me as female to anyone, and I made the decision to stop looking at it and making myself feel bad for very little reason.