I use to have problems putting on a pack,until I began to experiment.How I use to put it on was an old fireman's trick to put on your air tank.Put the hook into the triangle.Turn the pack upside down and lift it over your head.The just let it fall onto your back.It is much easier to show then to explain.Just talk to a member who is a fireman and they should be able to help.I now have gotten to the point where I can just hook the hook to the back triangle.
As far as the cross straps,you can wear them across the chest.That is fine.But I find hooking them to my belt is much easier and helps with the load alot more.
As far a wearing it.Wear it high and tight.This will help the weight from pulling down on your shoulders more.If it's too loose,the weight will strain your shoulders.Too tight and it is unbearably uncomfortable.Just experiment with it alittle until you find what is right for you.
South Union Guard
"Always carry a flagon of whiskey in case of snakebite, and furthermore always carry a small snake"~W.C. Fields
"When I drink whiskey, I drink whiskey; and when I drink water, I drink water."~Michaleen Flynn 'The Quiet Man'