How do you apply gutter covers over gutters with roof straps?

In this situation I take down the existing gutter if it is a K style gutter, next install a flat cover such as Shur-Flo brand or similar over the hangers, then I reinstall the gutter screwing the roof straps back to the hangers over the top of the leaf protection. This will give you the best result. I have owned a seamless gutter company for 11 years. stlgutters.com