"if a tree falls in a forest and no one is around to hear it,does it make a sound"

Yes it does!  We were right next to it when it happen a rumbling and a cracking sound  and in this case a big splash.  We were drifting the Goulburn  during the week and had just passed the tree and stopped to nymph fish a drop off.

Yes we did catch a few on the day.  Jig Fly Black Copper John BTB and Copper John Red GTB