Unbelievable
So when the first person climbs on top of, you feel as if you're going to collapse. Then the seconds stacks up and it gets really heavy. The main problem is that people continuing to climb are also influencing the weight balance and shifting of balance which makes it even harder. We had to lift the top guy on from someones shoulders because I would not be able to hold him if he climbed up on the side and there was no time to climb on a 'head side'.