I consider the CJ windage tray a "pan lid" more than a real windage tray. That being said, I use them when I have them. On my 489 I used it as delivered, on my 445, I drilled a bunch of holes on the "downward" side. My reasoning on the 445t was with a rear sump pan that didn't need the lid as badly and I was trying to make it peel off a little more of the windage. No idea if it did anything more or less, but if nothing else it gave a little more area to drain
That being said, the most important thing IMHO if you want to use it, is to trial fit and clearance the dipstick area on the passenger car style front dipsticks. In many cases, the dipstick can hit the tray, requiring sort of a twist or wiggle when putting the dipstick in, or even pushing the dipstick upwards toward the crank instead of down to the oil