it seems pretty stable. I used an old fire hose rack so I just left the width as is. If I had the money, know-how, will, time..... I would have widened it a little, but works for me. I think the key is getting the heads set up so the center of gravity is right through the center of the tub. I eyeballed this one and it came out pretty good. one handed turning if the lock nuts are loose. It will turn down flat on its own though if the bolts are left loose. Should have centered the tub just a little more. Good luck and though many people have lifted the tub many ways. five of my good friends was the smooth and easy way for me.