My team does not have its own permanent field, so we are looking into portable scrum machines. Here are the options: http://www.scrumbob.com/ http://store.ruggers.com/enforcer4x4.html http://www.rugbystore.com/img/assets/1026/moreProd.pdf We are looking for something that's economical, but not cheap (if you understand the difference). We are in the United States, so shipping could be pricey depending on where it's coming from. What do you think of these? Are there other ones out there that I'm missing? I'd really appreciate your thoughts and opinions.