Video is self explanatory. Great piece of kit. Will be attempting max effort on these at some point. Need to be hitting 200kg (441lbs) as this is usually the heaviest stone at a regular strongman meet (correct me if im wrong, this is the info i have). Ideally, will try to find a platform to place the 'stone' on. But for anyone training strongman i strongly advise this if you cant get stones. In the US you can get the elite stone trainer here. In the UK (like me), i just combined a deadlift pin with a bulldog clip. The guy who makes the deadlift pins does them on request i believe (its not mine).
The full blog as always is on Project Goliath