No, if you are talking about the fully automated ones where you push a button or sound activated and it sends the clay out, very expensive models. Yes, if you are talking about the ones that are spring loaded and you pull a string to release it or by stepping on it with your foot. I bought a spring loadedone a few years back that you stake it to the ground, load your clay, and step on a pedal that releases it. I have had nothing put problems with it and the only suggestions or ideas I could come up with was getting a old tire and mounting the trower into with cement to hold it down. It seemed the stakes would always come out of the ground or the chain woud break, or a bolt would bend, on and on. Now it takes two stout people to pack it around. It cost me around $150 for the thrower and I still usually end up using my $9.99 hand thrower. Only draw back is you need to people, but with the added concrete I added you need two people anyway. Heck, I bought mine for $9.99 try it, if you don't use then you ronly out a few bucks.