Answer:
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
What is weightless but it needs two person to hold it?
A precious stone, as clear as diamond. Seek it out whilst the sun's near the horizon. Though you can walk on water with its power, Try to keep it, and it'll vanish within an hour.
My life is often a volume of grief, your help is needed to turn a new leaf. Stiff is my spine and my body is pale. But I'm always ready to tell a tale.
A beacon from home to guide your way. It can be a lifesaver on a stormy day. What is it?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.