Hmmm,
I shoot nothing but broadheads... I dont even own any practice tips... I just sneak mine in backwards...works for me??
As for the size, its not really a factor any more, most carbon arrows now have the same or similar diameter as aluminum arrows... unless ur shooting a strange arrow thats skinny like they used to be 5 or so years ago.
any way,
best thing about the WB??? all ya gotta do is buy a 12$ center shot tool and you can tune ur bow at home without ever firing a shot in 3 minutes...
Once ya got center line perfect...Ya just use the bolt hole for the rest to check up and down (with an arrow on the rest) and then use the frame of the WB to make sure its parallel with the riser of the bow.
Combine that with always shooting braodheads and the moment of truth will go well!!