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for the weight i would say probably yes. still shouldn't leak like that unless it was a very pour application

sounds like a pour dwr coating. a sil tarp shouldn't do that.

a 13' ridgline mean is what you get from a 9.2X9.2 square. so you must be planning to cut a lot off of it, maybe turn it from a square into a diamond?

a 12x12 square has a 17' ridgline. if hung...

i think the stock HH has enough coverage but i hate that it is impossible to keep from flapping. sound slike you may have fixed that part ;)