Hi folks, I've got two MYOG tyvek tarps, made using tyvek adhesive and tyvek tape. They've got 8 grometted guy outs each.
Prices include shipping CONUS.

$45 for one -- this one should be good to go -- it was the second in my project process and so I refined the joints a little bit.
$35 for the other -- the one for $25 needs a little bit of touching up at the joints.

I'm not sure of the exact dimensions or weight -- I think I did 8'x10' and they're in the vicinity of 16oz. If there's overwhelming demand, though, I can check both of those things.

Never used 'em. Just cut the tyvek, glued them together, and rolled em away to the gear bin.

Pictures later.

Matthew