Re: the best broadhead target and.....
Rinehart 18-1 and the American Whitetail Cube Hybrid are nice targets, but you can loose inserts in them when pulling arrows.
The Big Shot Transformer has a core that the shooter can customize to the speed of their bow. It comes with different thicknesses and densities of foam. Nice thing is if a insert pulls loose, you can separate the layers and get your insert out of there.
As far as de-cocking, there are special de-cocking arrows out there but you still have to shoot them into something and they can break or fly off into parts unknown. I carry a small de-cocking target with me and just shoot into it with a field point. Most of the manufactures make these just for de-cocking.
I support all hunters, regardless of weapon or technique!