I would go for the storm cover that also covers the bonnet, stop water dripping through the louvres during overnight rain onto the engine bay and electrics. Not pretty but very practical.

22 Plus Four KIMI
12 Plus 4 Sport OZZY
08 Roadster FELIX
06 4/4 70th LOKI
77 4/4 SEAMUS
85 4/4 MOLLY