This might interest a few people. In July, Marco at As Tucas (a small lightweight gear maker in Spain) made a prototype cuben door for my Trailstar. Details here: https://blogpackinglight.wordpress.com/2014/07/24/as-tucas-trailstar-door-prototype/
Marco has now put this into production and it is suitable for other tarps with a similar triangular entrance. Details here: https://astucas.com/en/gear/arazas-curtain
It weighs 25g and protects the porch from wind driven rain as well as providing some privacy on a camp site.
Disclosure: although I designed the door, I have no formal or financial relationship with As Tucas, nor do I benefit from any sales.
