That 50 hp must be a typo, the older 853c are rated a 58 and the 863 are at 73hp on bobcats web page. You can lift vary close to the tipping load of 3800 lbs, if you can carry it low to the ground, then moving around can be done quite safely. Backing up, lowering the load, backing up hill, slowing down or stopping going down hill all increase the chance of forward tip over. Do all of them together and you had better stay close to the 1900 lb rated capacity. Any skidsteer has a vary short wheel base, compared to other types of loaders, so working on slopes, working with loads near tipping capacity, must be done with more care. But with an operator that knows this and how to go about the work, a skidsteer is one of the most flexible machine ever. Ken