Average distance and notes for different types of flu flu using 48# K Mag, 29 inch 400 carbon with 250 gr head target point/broadhead (approx 600 grain total arrow weight) shot at approx 45° elevation:
4 inch 4 fletch hard helical full height-- 87 yards; loud, regardless of rear edge trimming angle; flight excellent; high wear due to shelf contact; fill up back quiver really quick
Full length (10"), full height spiral (wound into 4" space on shaft, about 3/8" gap between wraps) quill towards nock end-- 71 yards; somewhat loud, flight good/ok; feather wear due to shelf contact; feathers get mangled in back quiver but doesn't seem to affect flight
Full spiral as above but quill down (point end)-- 40 yards; very loud, very slow
Full length spiral, trimmed to 1/2" high wound into 4" of shaft, quill up-- 82 yards; quieter than full height spiral, takes about 15-20 yards to fully stabilize
Full length spiral, trimmed to 1/4" height, wound into 4" of shaft, quill up-- 96 yards; quiet, pack well in quiver; take about 25-30 yards to fully stabilize, broadheads can win the steerage battle (think bareshaft)
Hybrid flu flu (2" banana, 1/2" height 4 fletch + 4" long banana 1/2" high wound spirally quill to quill immediately behind normal 4 fletch)-- 80 yards; quiet, excellent flight.
Hybrid flu flu as above except 1/4" height on spiral wrap-- 97 yards; silent, excellent flight.
I've messed around with other types and derivations of flu flu (including the half clamped, half wound type referenced above- the PITA factor is astronomical), but these are the types I've spent the most time on.
To add to above post regarding snaros, I put a 3" snaro (300 grains) on another type of hot rod flu flu that regularly flew 125+ yards and with the snaro it flew 75 yards like a guided missile- I think those wire loops impart a ton of spin along with the frontal air resistance.
Hope this is of value. Have fun tinkering!