Ok I have tried the high mount and low mount theory for almost 6 months straight 3 months low mount 3 months high mount. If I saw a speed trap i would turn around and mount it high if it was low and vice versa. Same thing with a laser trap. Regardless of lab results my results are from the real road going down highways freeways parkways country roads dirt roads you name it. A higher mount gives you allot more detection range both laser and radar. Also let me just say I'm not talking about a high mount like above your mirror. As i have found thats actually is to high. The perfect spot is just slightly below your mirror. If you have rear laser detection just make sure the optical lense has just enough clearence room so that the mirror is not blocking the rear lense and make sure theres enough clearence room that you can see the screen so you can read what signal it is. Anways if you sit it slightly below the mirror i have found on countless times that is the sweet spot. And believe me I have tried it ever position possiable over the 6 month period I have gone as far as turning around and going through the same speed trap atleast 3 times to see what the difference was. Especially with laser when I mounted it low I never got the laser to go off unless I was right on top of him. When I put it where i said to put it I actually got a pretty good warning not much but enough for me to slow down. If you have been a low mounter I highly recommend doing what I say it only takes one hit with a radar gun and you will see the difference.