Yoda,first time I have really read this thread from start to finish. I understand your anguish first with the tree now with the heavy snow.I've been fortunate so far here and with this being the first winter season for my 50x50 area of 9 breeding pens I too was very concerned with some of the snow we had the past few months.We had several instances of freezing rain and at one point my top netting looked like a solid sheet of glass. I don't know,maybe it was because I criss-ctossed between all my poles as well as each perimeter of each square of wood posts,but even when we had all the ice my netting was not sagging in the least.There was noticable dips between the poles but not much more than 3-4"s was all.
As much as I dread it I think I will start building the west side aviary in early april.I was hoping to ward off the urge for expanding but thats not the case. If I were closer I'd help you rebuild.For some reason it's always easier to work on projects that financially show no reward but the inner peace we have with the end product is always priceless.