Spence,
I did in fact look at Kasco's little picture and also at Randy's efforts. Mine was a direct attempt at immitating both of theirs (Thanks, Guys!). I thought about sidewall flexing so added a double lip. I liked the idea of gussets at the top and the hook was an afterthought. I haven't ruled out taking the torch to this one and shortening it in order to give me more breakout force if I think it will help. With my very limited experience so far, I wonder what this bucket would do if it was say 24" overall length. At least with stumps it would still probably get deep enough but you probably really lose the prying leverage that made your forks work so good for you. If I shorten it though, the breakout force will increase by the same ratio that you shorten it by but with the loss of leverage from the shorter overall length, it may not result in a net improvement in overall time spent root bustin'. I do look forward to exploring it's capabilities in spot digging based on how easy it made a deep hole in good soil. My problem now is it is not with me so it will be slow in getting performance updates but I will post them, with pics.
I did wonder what this bucket would cost from them though.
Greg