Well I have the advantage there in that I can scout in my full sized airplane. It is amazing how different places look from the air. The orientation of places on the ground sometimes is not as evident or you have a completely different idea of idea of the lay out. So seeing a location from the air, does help you have a mental picture of what is around you. So using the drone for that purpose is a very good idea. I will say that unless you have a very powerful telephoto camera system and are very lucky, it is unlikely to actually see a BF from the air. Like I have said, with all my hours of scouting from the air, only once have I seen something that could have been a BF. Something upright, large and brown, walked around to the back side of a tree to hide when I came by at a very low altitude. It could have been BF or a poacher in camo out of deer season. I immediately made a turn to see the back side of the trees but could not see what had hidden from me.
I will throw this out for those in WA and Northern Oregon. If there is some remote, inaccessible site, that you want to check out from the air, before you hike in, let me know. I would be happy to volunteer to take you for a look. The warning there is I would know where the site is but would agree keep it confidential and I cannot fly low over wilderness areas or National Monuments because of FAA restrictions. I have decided to look for evidence of lava tubes and caves from the air, so I can check them with a ground expedition. I think they are significant for winter survival of BF. After it snows, you can see large footprints from the air. If you can see footprints leading in and out of what looks like a cave or lava tube that would be a good area to check out. From the air you can tell the difference between bipedal and quadrapedal footprints. But the challenge is telling if they are made by bare feet or boots.