Provided I'm careful, I can store them and hood behind the seats on my '76 bench seat 4/4. Takes up quite a lot of height though. If we're going away in the car I normally put sidescreens and hood (in a HoE bag) on top of the case thats on the rack.
The '98 +4 has sidescreen storage below the rack - very useful! So useful, I'm considering changing the 4/4's rack...
Cheers,