AFIK, hoods are for protection. All seem too damn hard to remove IMO, which I suspect is why so many “get lost”. Some are cutaway to admit light.
Doubt you’ll see much improvement in accuracy if you remove it. A target suitable for iron sights might help. Most try to use one that’s too small, and/or poorly-shaped. Go bigger, and hold on the bottom which helps give a consistent hold. That’s what target shooters do. Some like a square, others a circle, but you want one big enough to see the sight against.
I prefer a square-topped blade like the Skinners. They come in brass and steel, and are easy to cut down if needed. The Skinner site has instructions on picking the right height and base width. Since you have a sight that’s the right size now, selecting a replacement should be easy.
