hey there, we have the kakadu hard lid surrounds, I think they are fantastic and will use them everytime, they have roll up windows that match the window location on the bed ends, I think they make the beds cooler as the sun isnt hitting the bed canvas (and theres obviously a gap between the bed canvas and the surround)
they are pretty expensive, but like the old saying goes, you get what you pay for
if you go to the my jayco part of forum,ours is there under "our 17.56-2 ob" its on page 2 now,and theres a pic of these ends
cheers
tony