There have been many myths like these over the years and I believe many have been properly realized by local inspectors over the last few years. I believe that NHRA has pressed that any safety item installed but not required is OK. In reality nearly every one of these myths has to do with reading comprehension, in other words "read the words" not what you think they say. Another myth that falls into this area is that all window nets must be replaced every 2 years. If your car is running under 7.49 (4.49) or quicker both ribbon and mesh nets must meet 27.1 and be replaced every 2 years. If your car runs slower than 7.50 (4.50) and less than 135mph the ribbon net does not have to be replaced every 2 years in fact it does not even have to meet the 27.1 specs. The mesh net does. Most of these myths are being propagated by local inspectors and not qualified association inspectors. However one thing to remember is that a local track can make their own rules, or interpretation, and that sometime is the problem.