I build a good number of Dodgers, biminis, and full inclosures and most every one is designed and attached differently due to the customers needs..
Have used awning rail with good results, and it comes in PVC.. most often around the front where the traveler spans the companion way.. did use it on one wher it ran off the forward area and down the side.. unzip the windows from the top and slide the windows out of the track leaving a sort of small bimini
where the dodger
Most of the dodgers I build are 5 pannel with a top allowing the removel of any part..
another way to modify the existing dodger
is to install a #10 YKK zipper about 2 inches from the bottom following the line along the bottom of the dodger.. unzip the lower area and fold the dodger forward...