Agree on o/h joins. The following works for me; As part of my planning, I sketch the airfield rwy layout orientated with my planned in bound track up the page on a scrap of paper on kneepad. Once I have established the rwy and circuit direction, I scribble that on the layout with the circuit height. Then put the crosswind join from the deadside and then you can work out how to get to there from the o/h.
Good luck