I have shot strikers for the last three years. I shoot more with my broadheads then with field tips, and have sharpened both the blades and the points, and have had no problems with flight. Now if the tip is rolled over a little then I would not try to sharpen it but if its just dull from shooting targets or your quiver which will dull blades then get a good diamond flat stone and make a few passes it will be like brand new. Keep in mind that you can only do this so many times before you start to change the weight and dynamics of the head. I suggest you keep 6 heads just for hunting, and three or four for practice religously, and dont shoot multipule arrows at the same point of aim. These IMO are the best flying heads I have ever shot, and I have tried a lot of heads.. I shot the Slick trick for a couple years when they first came out and they are ecxellent heads aswell, the only reason I went away from them is the quailty, I was getting blades that had over heated when sharpened leaving heat stain on the cutting edge. I think now though they have got there quality control under check since they have big contracts with large distributors. Blades are cheap, ferrals no so. Worst case try a few if your not happy buy new.