I found this elastic material in the craft section at Walmart.
On the model pictured below I used this material. The back of the hood has two straight pins glued into the firewall.
I made a loop on both ends of the material and glued it with CA glue. Then attached the strap with some stretch in the material.
You could also make hooks for the ends of this elastic material.
(https://images47.fotki.com/v1660/photos/4/3814514/14716631/20180327_091921_resized-th.jpg) (https://public.fotki.com/Bob-P/miscellaneous-items/20180327-091921-resized.html)Hosted on Fotki (https://www.fotki.com)
(https://media.fotki.com/2v2JBYfdFxALfc4.jpg) (https://public.fotki.com/Bob-P/johnny-mackison-1-model/20180326-113312-resized.html)Hosted on Fotki (https://www.fotki.com)
Bob
8) 8) 8) 8) 8)