There is only one thing to use I have tried them all and the best is rags you can buy them by the box build a box and put wheels on it and you can move it. The shop where I shoot uses this method we have 40yds inside and move the targets to different distances we have shoots all winter even 3D its a blast.

The size is about 4x8 and about 18ins thick the first out of pocket expense is a little high but the targets last forever. And your arrows pull out with 2 fingers I even have one in my back yard you must keep them dry but you cant beat it.