I use a Reflectex truck size windshield sun screen and cut from the same material purchased from Home Depot, I fit pieces for the two side windows. They stay by wedging them in the grooves around the perimeter. The windshield block is held in place by the visors. No tools, no Velcro. They all fold neatly for easy storage.
JDKD123
2005 Coachmen CONCORD
GO
SOX!