@nickale Sled dragging.
Get a used car tire, 3/8th eyebolt and nuts. Some nylon rope/ratchet straps, and diy a sled. Wedge a small price of 2x4 in the middle of the tire so you can put weight on it. 20-40lbs is a good start.
Take to a park. Drag. Pretty simple. Front drag, backwards drag...