Experience WRT NOT using MLR E-5 in Serious Competitions
I ran into an interesting situation the other day. My cart partner had a longish approach to the green and pushed it way right. It rattled through some tree branches and we heard it hit the paved cart path. At that point the cart path was sloping well back toward us, so we expected to find the ball in that general area of light rough., We never found the ball so applied E-5 and moved on to the next tee. And there was the ball at least 75 yards from where we were looking (and the ball was OB). We have no idea how the ball got that far when the cart path was very sloped in the other direction.
If you don't know where your ball is, you can be really wrong guessing where your ball is.