I’ve only used the wawona 6 once before and really liked it, but like a lot of people don’t love the open interior mesh door with the amount of wind/cold air that can come through under the vestibule. Has anyone made a diy door flap for theirs? Would love any suggestions. I’m a once or twice a year car camper in places like Yosemite and Zion so my knowledge base for this kind of thing is pretty limited. Thanks in advance!