My first use of the Zip Navigator was not entirely satisfactory. I have a golf bag that is small enough to use as a carry bag. I found it difficult to securely tie it into the space provided with the straps provided. Furthermore, when using it, the front wheels came up off the ground even when it was going up a very gradual incline. I had the small rear wheels back in the farthest position. When the front wheels came off the ground it would stop moving. On the 18th fairway, the wheels completely locked up and I couldn't get it to move. I eventually had to drag it off the course. I am very disappointed by this result.