Here's a trick I waqs told AFTER I wrecked my black hole.
IF/WHEN your broadheads stick out of the back of the target. REMOVE the heads before withdrawing the arrow. The damage doesn't happen when the arrow goes IN as much as when you pull the arrow OUT! at the high speed the arrow enters, it doesn't move the layers much...but when you pull the arrow out, friction tries to grab the layers and pull them out as well.
I'll let y'all know if this works with my new target.