I use the old "L" trick for finding 30degs: walk away from your hammock about 15-ft or so, put your arm straight out, and make an L, or backwards L depending on which strap you are on.
Your index finger should be lined up with the tree, the thumb at the hammock/strap point. Move the strap up or down to match the top of your index finger.
You are creating a right triangle, with your straps being the hypotenuse. Your angles are 30/60/90, hence you find your 30degs. It works well enough for me.
Bookmarks