This is my exclusive set-up. -20# .. The only update to the pic is I attached a backpack hip-belt so there is no weight on my shoulders.
KEY to this is using a turkey vest with all my stuff; saw, pruners etc all in the same pockets- so as I climb up i can grab whatever I need.
I never use a lineman line as it is too dangerous- I want to hang on to the tree, not be using my hands to move a rope around limbs. (It may work for a telephone pole, but not trees with limbs.) Once I am on the top of my second stick- before stepping up on my third, I tie on to the tree with my rappelling/climbers harness. Again- my 2C.
Cover is nice in a tree, but I stand against the trunk quite often and get away with lot.
Dan in KS