A good retention holster and a backup gun on the weakside.
So, open carry requires that you carry 2 guns? Would the BOB be concealed, or would a Bill Hickock rig be better?
In all seriousness though, guns - as we all know to well - are expensive, and open carry is basically advertizing a big payday for anyone who can take it from you.
Plus, outside of the woods, it makes you look a little foolish.