I put up my Hennessey hex and left it up for a couple of days through a couple of torrential downpours to see if it was "hangworthy". When I went to take it down I noticed about a 1/4 of a cup of water in my hammock. There are no noticeable holes or anything but I did notice the tarp isn't seam sealed. I know a flat feld seam supposedly doesn't need to be seam sealed, but what is everyone else's experience ... did you need to seam seal the ridgeline seam on your hennessey hex tarp? Nice tarp .. no big problem for me to seal it but I don't want to bother with it if I don't need to because as you know its a bit of a pain.