I just installed my Zumo 660 on the Ironaces mount and went for a ride to test it out. Immediately saw the issue when the sun was anywheres behind me, couldn't see the display. I was worried about what to do...then just saw this thread! Thanks...just ordered a set.
'12 RGU; 17" Carlini Evil Apes; RSD Venturi Speed 5 A/C; V&H Power Duals with Monster Rounds; SE Perf Tuner; Slipstream HD grips and footboards; 14" Windvest; Ironaces GPS mount; Tour-pack Spoiler and Rack.
I caught the sun a different angle yesterday and lost a little bit of visibility compared to before. I was still able to make out the map, streets and my speeds, which I was not able to do before I had it. Not perfect, but much better than stock.
After mounting my Garmin Nuvi 1690 with an Iron aces mount it became apparent that sun glare was going to be an issue, the GPS was almost useless in direct sunlight.
Well after talking with one of my power boating buddies he suggested that I try a product by NuShield called DayVue. This is a Anti-reflective film that applies to the screen of your GPS. After applying it yesterday I must say that I am 100% satisfied with the product and I can easily see my GPS screen in the sunlight.
I would highly recommend this to anyone running a GPS that has sun glare issues.
2 films cut for your unit run about $15.00
Also, here is a 10% off promo code: NCLP10