I know this seems a juvenile question- but I need to learn. I have a B model Mack hooked to a 38' 5th wheel travel trailer. The whole rig is about 60'long, equipped with very good west coast style mirrors and convex spotters. There pretty good but as soon as you start backing, you loose their advantage- so what do you use as a reference point- and particularily when you are backing right? BTW, trailer wheels are paired axles and located about midship. Should you be able to back right in, or must you back and go forward, back and go forward.
