Two Half-Hitches is a useful knot that has a specific purpose. This knot is used to form a loop around a post or through a grommet. Two Half-Hitches can be used to tie a guiding line to a dining fly or cover. This knot is also particularly useful because it can be quickly and easily adjusted, and will not untie under stress.
Two half hitches
Pass the rope
Around the pole
Around itself
And then between the ropes to form a Half Hitch.
Go around the rope again
To make the second Half Hitch.