I think this one holds about 180# of water. After going over by myself I grabbed the bag off the tramp and without using it before I had the boat back on it's feet almost as fast as I would with crew. In fact It came over easier than with crew. Totally suprised me.
How do you lift a 180# bag, hold onto it and the righting line at the same time? Block and tackle? That was my issue with using water (granted I never tried it, just thought about it.)
