We've got a little Case 1816b, about the same size as the Bobcat 440.

When you're trying to dig in hard ground, don't empty the bucket out all the way keep the bucket about half full and you will have much better luck getting it to cut.

The little narrow skids are extremely tippy.   Working around down tree branches is a recipe for laying one on its side.      Back over a 6"-8" log with one side with the bucket up in the air a little bit and you'll be laying on your side, btdt only it wasn't a log.