Yeah, I'm probably only gona use it under a tarp, unless it is too windy
. And I do intend to both seal the seams AND put on a storm flap. And if the weather is reeeally bad, all I need do is turn the bag over so the zip is on the ground - if the weather was that bad, I wouldn't want to be getting in and out of the bag all that much anyway, and the draw cord would be pulled completely closed, so it really dosn't make all that much difference which way up the bag is (I have thought this through, despite what some of you may be thinking
)
Thanks for all the replies, Jake.