I use Sumner 210 to wax the eisenglass. It is a spray on wax that will help the water drops to bead and run off. It works very well. First used it on some old cloudy eisenglass. I had tried Flitz and several others. All were a pain to use. The 210 just sprays on and wipe it off with a soft rag. Goes much quicker and I could actually see through much better after using the 210. A canvas fabricator in Cape May turned me on to it. I can do the entire flybridge enclosure in 45 minutes inside and out. The Flitz took hours and really didn’t help. No interest in product, just a very happy customer.