I've only had my Hex 3 out a couple of times. No rain either time so can't comment on the rain issue....BUT..........the last time I camped was in the middle of a winter storm with high winds that dropped about a foot of snow at my campsite. I did get some spindrift through the vents that made a nice little pile on top of my sleeping bag in the morning! No real problem and I'm not too worried about it's ability in the vast majority of rain storms.
I did find that it didn't feel as large as many of the reviews had led me to believe though. I'm used to sheltering under an 8x10 foot siltarp that has loads of room but isn't as secure in shifting wind conditions. Can't complain too much though since the Hex seems to weigh hardly anything and since I'm already carrying 40 pounds of "survival rations" around my waist, any weight reduction I can buy off the shelf is worth it!!!
I did find that it didn't feel as large as many of the reviews had led me to believe though. I'm used to sheltering under an 8x10 foot siltarp that has loads of room but isn't as secure in shifting wind conditions. Can't complain too much though since the Hex seems to weigh hardly anything and since I'm already carrying 40 pounds of "survival rations" around my waist, any weight reduction I can buy off the shelf is worth it!!!