2rsquared--that's a different tent. the Alaska guide is a dome.
Tim in Wa.--your post gave me an idea. the problem with a tarp besides taking space in my car is that it's heavy. they wouldn't let me upgrade to aluminum poles (my brother in law has the 8 person alaskan guide and they had let him upgrade but said it wasn't available to me in spring 2020 when I bought the same tent) and the fiberglass poles are heavy and already a bear to lift up when threaded through the triangle of sleaves at the top of the tent. So having a tarp on it, and working in the rain, seemed like a non starter. But at least, I think, if I bring just a roll of polyethylene it won't take much space and it doesn't have to be very rugged because it's just temporary till the fly is on. and it should be light enough not to cause extra problems about lifting.
I'll have to try this some time.
Another idea--I have extension poles I bought from Ace Hardware to put the vestibule flap up (there's more to it but that's another story) and maybe there is some way i can use one to lift the center of the tent up from the inside. temporarily when the tarp/plastic is on it and it is hard to lift up. have to have some kind of light plywood shape so not to pierce anything above and something to put it on to preserve the floor and bottom of the tent. I'm not sure if this is a good idea but i'll report on it if i try it.,
and another thing--there are some problems with the tent design that i have some solutions for and there is no video about it so hopefully i will make such a video, some day when i have too much time on my hands.