Sounds like there are a lot of designs out there for making homemade archery targets. One design that has me intrigued is stuffing a burlap sack with plastic grocery bags. Sounded crazy to me at first, but there seems to be a lot of guys that use them. Has anyone tried this design with modern compound bows, shooting up to 300 fps? I can see it working for traditional equipment and maybe lower poundage compounds, I just have a hard time believing it will stop arrows coming out of 60 or 70 pound compound! Thoughts?