A few weeks ago I was lucky enough to find and buy 75 feet of hemp rope. It's not a thick rope but it'll do just fine for me messing around in the back yard. This afternoon I attatched it to my sled and the fun began. I reeled it in 3 times just to see how well it worked. With only a 50lbs plate on the sled it still managed to get my heart rate up and my back sure did get a pump. My lovely wife timed me and it took between 30 - 37 seconds to pull the sled the 75 feet of rope. Here's some pics.