Nick - Chicago, IL
I have an old & slow mat at home, as well as access to an indoor green at my gym. Most of my winter practice is in my family room on a mat.
I have been using a worn down artificial turf mat for a few years now. Due to its slow speed, it is tough to practice on conditions I would normally face on the course. My gym has a Big Moss green that I use from time to time, it is just not as convenient as having one in my house though. I work a lot with alignment aids and tools such as the Pelz Putting Clips.
I would love to test the "Fast - 11-13 Stimpmeter -