How Convenient: 3 ton floor jack?

Only need I see for a 3-ton floor jack is for having to jack up a loaded 3/4 ton - 1 ton truck/dually or loaded race car trailer. (Support with jackstands using thick boards as a base in grass.) They are too heavy to handle for any lighter use. The one I got was a NAPA brand on the recommendation of a friend who owns 3 stores. Friends who owns a busy tire store also have several units in their shop. I have a Craftsman aluminum 2-ton that I've taken to the races with me for years just for the race car. I typically don't care for Harbor Freight, but I do have one of their aluminum 2-ton jacks for basic maintenance on my smaller vehicles at home. I try to use a thin piece of plywood under a trans pan. Haven't gotten around to fabbing a bracket underneath to surround the jack head to help keep it in place. One on top to surround the trans pan wouldn't be a bad idea either.