Glad to see its coming along. That bondo is going to be a pain to sand. Its my least favourite thing in the worl. I spent over 200 hours sanding a speaker box once, my fault for using some stupid intricate curves. Keeping the detail is a pain. I am totally going to steal one of your ideas. Using the jugs to support the thighs, I think that is great! It helps to keep the round shape, minimal contact, and using the plastic bag around the jug make for easy removal and cleanup. Genius! How many layers of fibreglass did you use. I like to go heavy on the fibreglass. I don't mind the extra weight, i like it to be solid. I once did a speaker box where the fibreglass was 1/2" thick. It weighed a bit, but I could dance on the thing without it breaking. Once again, good luck, glad to see its coming along nicely!