Old pipeline welder here. I agree with the filling with water whole heartedly. Seen some crazy things happen over my career. Stay safe.This is just a thought for you weld a oversized plate on the bottom of your feet. Drill a hole in the bottom for the water to drain. Weld a piece of pipe on the side for accessories like a grill.Ever consider making one into a fire trough? A big long fire pit for everyone to gather around would be cool.