Another couple noob questions

... I'm shooting my Horton Explorer 150 into a 14" deep Black Hole brand layered foam target. At 10 and 20 yards the arrows are going all the way past the front so I have to pull them out the back. This is quickly damaging my fletchings. So far all I have used are 100 grain field points. I can't even see where the arrow strikes until I walk down to the target because the arrow goes so far in.
Should it stop them so they still stick out the front and you pull them back out the front?
Do broadheads or fieldpoints penetrate more? I've only shot fieldpoints at it.
Is this target made for crossbows too? It didn't say anywhere or list a maximum speed/range/whatever so I can't tell if maybe I am exceeding what it was designed for...