Tak,
We did park in the F.W.R. Dickson Wilderness Area parking lot and walked the short trail in to view Bannister Lake. I have been there before. There is a nice 2 story high viewing platform there that looks northward over the eastern end of Bannister Lake. the Sandhills are ( reportedly ) usually far off on the north shore of the lake. I did see a few there last fall, but too far away for good viewing or photography. We did not see any on this visit. There were some ring necked ducks and buffleheads, but too far away even for my 400mm to get good pics. I snapped the TVs while on the viewing platform, they were barely 100ft right over our heads.