Have been covering my RV's every winter for years, fighting with keeping tennis balls or pool noodles over the gutter spouts.
Came across this new item - https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1.
Very easy to install, was able to drop the cover over each corner without wondering if they'd fall off. One of those "why didn't I think of this" items!