Use the turning hook or turning strap if you think that the tree is not too stuck.
Work as follows:
1. Assess which way the tree can be rolled down. Saw off the middle of the hinge so that two corners are saved. Next cut off one corner with repeated saw cuts diagonally from above. Leave the corner on the side that you intend to roll down the tree.
2. Take the turning hook (turning strap) and roll the tree away from you. Lift straight with a straight back and knees bent. If the tree is large or has hung really tightly, you can increase the rolling force by using the turning hook or turning strap with a longer piece from a thin tree.