Yeah I watched the video, I also heard that Anna Nichole married for love, Colin Kaepernick signed with Green Bay and the election was fair and square, its an opinion, that's all it is, As I said in post 5 if you like it by all means use one, Now this is my opinion, if you cant get behind your rig and know that your not level regardless of the terrain that your in you probably shouldn't be hunting long distance, Once again I mean no offense and I know I'm old but in my military career I was lucky enough to go to some of the finest shooting schools and we shot a long ways for a long time with straight 10X scopes and no levels, I know times have changed and I'm all for it but the list of "Must Have's" if you wanna be accurate these days is comical to me, I don't know how anyone ever shot anything before Kestrels, Bubble Levels and Bore Scopes,Once again I apologize to the OP for all of this mess over a simple question, seems the norm anymore