Do you have a home made roof rack awning?

The Troopy arrives at the end of the week (you beauty) and I have been trying to sort out a simple overnight side awning system to save erecting the camper awning all the time which is a PITA.

Not keen on spending the dollars on something like the ARB one and they are too small and inflexible etc. I have seen some from a distance on roof racks but was looking for some detailed descriptions and ideas. It's got to be practical and quick to setup and pack.

Thought the simplest way would be to use a tarp or a custom canvas one (folded and stored in the truck) say 3mt x 3mt and occy it to the rack and to the top corners of the open camper but somehow that sounds too easy to work. For one the rack is only 2mts (not long enough) and it will prob have too much sag without poles and ropes etc so would be impractical in heavy rain.

Surely this is a much sort after item. I just want a roof no sides, just to produce shade and simple cover. Would prefer something rolled up ready on the rack but how to secure and attach each end simply is the trick.

I know someone will have a good setup here and if it's a really good design I promise not to tell anyone else here until you patent it. :)

Oh and it's got to be simple to produce. Just assume very limited trade skills, no welding etc
Don't want much do I?
John