Wohoo!
A little off topic, but..
How are you triggering the Gopro when doing an aerial survey with Tower? I was out last weekend and did some tests. I set up Gopro to do time lapses ( in video mode) as I found in a howto at diydrones (I think it was). It did not store any pictures or time lapse movie when I used Tower. It stopped the time lapse recording as soon as I hit "Auto" in Tower. But each camera shot area were displayed during the flight on the map in Tower.
Now I found that when you create your survey and upload it to Solo it creates a start camera waypoint and a stop camera waypoint and when looking at the start camera waypoint it sets the distance to trawel between the pictures. I was not aware of that and that must work pretty fine with Gopro as the shutter can be controlled from the tablet. That is far better than time lapse. Is that how you are doing? I will try this if only the rain will stop...
Gopro 4 black and Nexus 9 is the stuff I am using.