Well the point of a truss is to reduce flex, otherwise an arch will do. So making a truss an arch seems a little over-sophisticated for the purpose, which, after all isn't an aircraft wing or even a building resisting a snow load, Down Under. But not much is going to hold up to continued tree dropping, so I'd cut that practice out as soon as possible!
I find that worked for me...... fingers crossed....
ps. I imagine upward forces from wind loading are as much of a concern where you are.....
pps. I'd just make it like the others, if arched they will still remain so, and if straight, likewise.
I find that worked for me...... fingers crossed....
ps. I imagine upward forces from wind loading are as much of a concern where you are.....
pps. I'd just make it like the others, if arched they will still remain so, and if straight, likewise.