Never used them but one of the guys I shoot with does. They seem to hold very well as long as you get good penetration. They seem to be good for shooting big fish, but if you're going for numbers they take too long to get the fish off. The tip as to come all the way off in order to get the fish off of the arrow. When the fish get thick he spends alot of time trying to get the fish off, and put the tip back on.