Re: acceptable distance for 9' 5 wt.
40' is usually enough for most fishing. Don't push so hard when you try to go past 40'. Just let it happen. You might be bringing the rod to far down on the cast. Stop the rod like you are casting to the horizon. Then you can follow thru on down. But stop the cast like you are swatting a fly on the wall .
You will get it, if you need it.