Arkansaslongbow, excuse me but, Flemish is a style of bowstring and fast flight is a a name of a material used. This has been a confusing term over the years. I think you meant, endless type.
My oppinion and experience has been a heavy arrow, correct brace height, for the particular bow makes a big differnce! I have not had silencers on my longbows, mostly selfbows, in many years. It seems humans are more sensitve to the sound, then the whitetails I have shot! And yes, I know someone is saying, not the Texas Whitetails! Good shootin, Steve