Hole lengths a need?
How often do you actually use the hole length when deciding what disc to throw? I don't think I've ever used a hole length to make me change my disc selection. I can tell where my discs are going to land and how far they will go so why should I use a length.
The only way I could see it helping is when the elevation is changing and there fore might play a little longer or shorter than it actually does but I've only seen a handful of signs that display that kind of info.
Also, how should you measure the distance? Should it be absolute length or flight of the perfect shot. Should a hole that goes 300ft straight then dogleg 50ft right be 304ft(the length of the hypotenuse) or closer to 340(the length of the discs flight?