I have a buddy that used to have his floods like this: Two infront of the OWB (i.e. behind him when he is facing the feed door.) and one shining down. The two at the back have enough light to light up his feed wood (i.e. that which he stacks next to the OWB). Not enough for his secondary stack, but as he says, "I move that closer when it is daylight as needed". One shining down can be a little bright, but enough light to do anything you need to.
When I say used to, he dug up around his OWB and had to move some of the feed wires to the back floods, just has not put the wiring back yet. It all depends on your setup and what you want from them. The output on the floods will vary depending on the distances you want to light from.
Tes