I know it does'nt really matter how many blades you shoot as long as you hit the right spot . My ??? is has anyone had trouble with 2 blade broad heads not leaving a good blood trail? the one time I used a zwickey 2 bl. the deer only ran about 100 yrds but left hardly any blood trail to follow ... when I did find her I tried pulling the arrow out ..Ihad to twist and turn the shaft sideways to break the sucktion of the chest cavity ... When I field dressed her I found that i went through the liver into the chest and there was blood a plunty ..just none on the ground to track. Would a 3 or 4 bl keep this from happening? But the problem for me is I like to shoot a light poundage bow ( 45-50 lbs) and some times I don't get an exit wound depending on the angle I hit through the chest ...so I thught the 2blade would allow me to go a little deeper???