Been shooting (4) 4" feathers @ 90 degrees and (3) 5" @ 120; haven't seen any difference in flight or impact.
The other day one of the 90 degree 4" feathers came off so now I'm shooting one arrow with (3) 4" feathers @ 90 degrees. Looking from the knock end I have one feather at 1 o'clock, 10 o'clock and 7 o'clock. Arrow looks really weird but it still flies perfectly with field points. Haven't tried it with broadheads yet. Does anyone have any comments or expierience with this set up?