Scratchin' on a Duck Hole with JD

I'm attempting to make a duck pond for the wildlife. I enjoy watching the critters. They all need water too! And you never know who will show up for a drink!? I started this project this September with a 1956 John Deere 420 Crawler with a 2 point blade, up and down. It also has a bad carburetor that I should replace, should $$. It's hard scratchin' and slow going with this Ol' John, but it's a step above a shovel. It's still hard on the back!