In my setup my cord feeds in thru the "mouse hole" with a cap that snaps down to prevent the varmints from climbing up the cable into our TT. when we leave I just have a rag in one hand that wipes the mud and bits of grass etc off of the cable as I feed it into the storage cavity. It has yet to tangle up on me. when we set up I like being able to just pop the cap open and pull out the cable. I did install my ems in the storage cavity.. Guess it depends on what suits your purpose..
happy and safe travels...