guà (hang or put up)

A sail hangs on a sailboat.  Stars hang in the heavens.  Think of this as two clothesline poles on the right side, one above the other.  The radical on the left you'll just have to remember.

It's shǒu (hand)

which distorts to this when it becomes a radical.

So this is easy.  Two poles, with imaginary lines between them for hanging up washing, which you must do with your hands.  Now you shou'nuff better gua'n down to the yard and hang up them clothes, y'hear.  (It's a stretch, I know.)