Questions for double pulling

We have towed our boats with our fifth wheels since 1993. Generally have the wife guide me to close to the hitch and then move it to the ball. It sometimes takes a while if I don't follow the directions properly, but we have always gotten it done. Worked with our 21.5' fifth and now with our 26.5 RLS Jayco. Have given some thought to the back-up camera but reviews on the wireless ones are less than encouraging so have not taken the leap yet. And, it's not triple towing as allen above says, it's double "towing", you just have three items in the train. I think the legal length here in Wyoming is 75' and you don't need a special driver's license, just common sense.