I don't shoot Blazers, but know many who do. I have my reasons so I'll leave it at that. I do have to say that there is nothing magical abut Blazers that will make them group better than any other type of vane. How well arrows shoot and group is merely a matter of picking a properly spined arrow and tuning the bow/arrow combination. If the tune is good then any vane/feather will work well.

Blazers do a good job of stabilization due to their stiffness and high profile. I think a lot of guys use them because they are shorter so allow a litle more time for a drop away rest to get down and out of the way. They also work better than softer vanes when shooting through rests like the Whisker Bisquit as they hold their shape better. Then there are those who shoot them simply because they see other shooting them.

They can produce some problems. One being that with the higher profile they may make contact with the cable(s). This can often be solved by using a cable slide that pulls the cables farther to the side or adjusting the cable rod if possible.

But make no mistake about it. If your equipment is not tuned well no type of vane is going to improve the grouping ability of the arrows and broadheads can and will fly ugly.