Old ripped unknown maker needs new cover

[bunnyurt]

We just bought land in Maine, and we got a bonus 16’ yurt on the property! It currently has some kind of vinal cover on it nailed directly into the walls. It’s been left out for years so it has rips and the window is just screen. We will need to be replacing the walls and roof but I’m at a loss! I’d like to insulate it and leave it up year round. There is not a manufacturer listed anywhere on the yurt (I’m assuming they made the cover that’s on it now). Any suggestions on “universal” covers? Or is there one brand that would be better accommodating to fitting an unknown maker? I believe it’s 7’ walls.