I have the same cart with the bag lift it sure makes it nice for lifting canola and inoculant bags up to the top of the tank. I also carry extra bags in it to match the acres that I can seed per fert fill.
It lifts straight up and down has like a parallel link system to keep the platform level as it lifts. I trust the cart but I still don't load the canola tank right up so that's why I carry extra bags on the lift. My dads going to be 81 this seeding season so it easier on him with the lift.