Vane size & helical
 

This is a 2 part question,First-I'm shooting 85gr. grim reaper broadheads(expandables)on carbon arrows.Since I'm not dealing with the large surface area of a fixed blade head,could I get away with useing a shorter and lower profile vanes,more like the target shooters use? Second-Is there any bennifit to useing a very aggressive helical on a low profile expandable type head?
Any thoughts on this from our resident tech. types??

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