hey i don't know if this subject has been covered before but a friend told me about using Great stuff foam insulation to fill in holes on my Glen del 3D target to prolong the life of the insert, i tried it last season and am still shooting it now, whenever it starts to wear out i take the can and fill in the cracks and holes and let it dry, then i take a razorblade and shave off the excess, so far i've got an extra year out of it and haven't had to spend $50 on a new insert, i'm sure it can be used on pretty much any 3d target out there. Just thought i'd share if no one has posted about this before
