If I was doing only track I too would take them off.
As mine is only road car I can't ever see the idea behind losing light/s.
I even took off the ridiculously dim tinted(4wd) rear lights on my sapph and put on amber indicators and repeaters.
I just like to be seen, and thought fogs were way better to have than not, I just think it looks a whole lot better with fogs in there than vents, certainly for the road.
On me other halfs car I have HALOGEN rear light bulbs, just to brighten things up, and of course me rear lights brake mod!!
Perhaps on my part I should have said something a bit less strong like pointless, stupid is a bit silly from me but I did not realise your car was mainly track though.
tabetha