Seriously though, I've used gutter extenders and they really don't help all that much. If there is ANY wind at all the runoff still ends up down the side of the coach. I'll admit they help with condensation runoff on those quiet, peaceful mornings but they don't cut the mustard for rain.
So, we need a better solution. There is a reason why the downspouts on your house run all the way to the ground. Why can't we have a similar system for our coaches?
As an aside, I notice that several manufacturers now use condensate pumps to move the water created by the roof-top air conditioners to ground level. So, they understand the need but still haven't arrived at a solution for rain water.
Randy and Tina & pups; Cinnamon, Cookie & Coco
2010 Winnebago Journey 34Y
Freightliner / Cummins 340hp ISB, 94 Lexus RX-330