Sam,I also welcome you, this is a great site. Not to be rude but I usually am. Are you seriously digging a pond by hand? What size are you considering? I hope some dirt guys come on and explain just how much dirt a 20'x20' hole 10' deep involves.
Do not mean to be negative but you should consider a different method. Call some local pond builders (not just excavators) and get some info/qoutes. Good luck with whatever you decide.