After back surgery and other surgeries and facing replacement of the knees this fall, I have learned to do things smarter. Gone are the grab and go days. First time on this thread that was recommended to me, so if I am being repetitive of other post I apologize. If you buy a dolly, think about the size and kind of tires on it. The hard rubber wheels last longer, but are harder to use with weight on them. The inflatable tires move much better. The bigger tires the better. They will not dig in sand and dirt as deep. Also, look at the quality of tire. I have things from Harbor Freight. One of the problems is with the quality of their inflatable tires. They tend to deteriorate with time. I have a Super Brute from Sam's Club. Given they are a bit more expensive, but I have moved furniture, feed, the constructed side of a 4 x 4 coop and many other things on it by myself. It also folds down to a platform dolly to move things easily on solid surfaces. I put a strap around things that tend to shift when I move it. The next best thing I use is a solid body plastic dump cart. They are online and places like Tractor Supply. At TS they are $100 up, but you can find them a lot cheaper. With the dump I rake out my elevated coop, move dirt. put buckets of water or buckets and sacks of feed and with the large tires it moves easily and can be pulled with a garden tractor. I like the steel frame ones, but they don't dump and then you have to unload the stuff. I know many cannot afford the price of some of these, but my thought was "How much will another Dr. visit or surgery cost.