I filled up two empty bleach jugs with sand . Tied a nylon rope between then about 10" longer than the width of the second step up from the bottom of the stairs .

Hung the jugs by the rope on the back of the step ( on mine is were they snap together so was a nice crack to fit the rope in ) one on each side of the steps . Now when I take out my steps I just grab the rope and take off the weights in the pool and they are much easier (the steps) out of the pool .

If you wanted more weight , fill with cement , either use , 2/3 gal , 1 gal , or 1.5 gal jugs . On my pool they are white jugs that more or less blend in with the steps anyway .

cheers
Sprocket