Very, interesting point, HRH Betty!?!
I watched Lee Wulff, at a show in 1971, cast an entire 90' 5wt. line and he didn't bother using a fly rod, to do it. Joan Wulff, holds the distance, still I believe, at 320' of fly line, in one cast!?!.
I've thrown, a 90' 5 & 6 wt, using a rod (unlike Lee!), trailed by a few feet of backing, indoors no wind assist. But, I still don't see any point in doing it, regardless. I hate competition of any form in fly fishing and I couldn't see my fly past 60 feet, anyway!?! What's the point?