I don't string rope thru pulleys, just leave haul rope and pulleys as one unit.
after i lower pack, i pull up haul rope to "top" rope and then lower "top" rope and unclip the caribiners. what i end up with is all 3 pulleys close together and i wrap haul rope around like you would a outdoor extension cord? i do reverse when i'm hanging pack, tie off one side of top rope and make two loops and clip caribiners on and attach pack pulley. Then i toss remaing top rope end up and over and pull up. the weight of pack pulls out haul rope and i'm ready to hang. I'll do the same with Azlea's version except the 2 pulleys will be on same side closer to tree. i think taking out rope "sag" and putting tension closer to tree trunk will make lifting even smoother??
i have two climbing carabiners attached to two top pulleys and just make loop in top rope like you would if tying a "truckers hitch".
i really like the version Azlea put in his post and will try next spring and post pics if it works as good as it looks??