Big Snuffers, MagnusI, Zwickey Delta, Simmons Sharks, anything big and bad! I believe shot placement and a sharp broadhead will do the trick every time! Get 'em sharp, i used to think that keeping the arrow in the bird was optimal for recovery(the fletching would be easier to see in the brush), and id only sharpen main blades and just touch the bleeders with a file! It may have had some merit, but a shot in the boiler room with one of the afformentioned head, and many others will result in a short tracking job!