I always spend time doing FD, mostly with club groups but QRP 1B Battery from time to time and indoors now and then.
I do 1 B battery one operator FD from time to time, this was a very hot year and the K3 was pretty new, I used the K1 for the pure solar power multiplier. The mast goes up almost 50 feet. Set up was Friday afternoon and tear down began shortly after FD ended. I ended up second place in the 1B 1OP Battery class that year