Awesome, thats my head for this year for elk and then bear when i return to MN! Im shooting it out of my Bear Montana longbow, #55@28" with it riding on a 480gr Douglas Fir arrow for a total weight of 645gr! I have tried a few methods of sharpening them, and the way i like to sharpen them is with a KME and a set of "old" Norton stones! I start with a back and forth motion on the coarse stone with moderate/heavy pressure to get the bevel goin and then i reduce the pressure as i reduce the coarseness of the stone! I finally finish off with a good stropping on a piece of flat cardboard! They are deadly when they are sharpened, i kinda get a hybrid of the "old" Fred Bear edge and a razor blade! They hold an edge too, i sharpened a few up the other day and shot them into a bear target, and they had an edge after a few shots that was worthy to hunt with! As far as tip modifications, i put a "mini" Tanto Tip on them with a Nicholson file, used the technique that Dale Karch used to put a diamond tip on a WW on the 3rivers website!!!