DG105 is a great product for winter protection. I`ve used it the past 4 winters on DD`s kept outside 24/7. I like to mix it 4:1 with DG601 for instant curing and extended durability in a 3-4 oz. squeeze bottle, using a ruler to measure proportions. Two coats will probably get you thru winter if you`re using Aquawax regularly. You can also use DG111 as a topper, which I have done, but my favorite winter combo on my Black DD is DG105/601 topped with Collinite 915, 476 or FK1000.
Here`s a pic from mid-April of 2015. I had done a through spring cleaning that day, but no time for polish or wax. My winter prep, DG105 topped with Colli 915, was still going strong.
BTW, if you find repeated use of AW is causing a loss of clarity, DG recommends mixing it with DG Fast Clean & Shine, but I don`t remember the proportions of AW to FC&S. I sent an inquiry to DG and I`ll report back with the response.
Bill