I've used the truglo sights for my 1100 mainly for rabbit hunting. I too had the problem of them falling off. I used them for about 2 years without it falling off. They do provide a great luminous light and have great visibility on the barrell. I just recently purchase a new set just the other day. They are different from what I have used in the past. It seems as if they have an abbrasive glue-type material, unlike the magnets on the older version I was using. They are also more tight to the rib on the barrell as well so after placing them on the gun they feel quite solid to me. It was about $30, but it was packaged with their gobble stopper extreme vented choke tube... which is what I was wanting to purchase in the first place, so the fiber optic sights were just a bonus. Not a bad price. I'm going to field test them both this spring and see how well they produce this year. I'll keep you guys posted.