What obstacle?
What’s two feet of packed snow to a dog and her flying turtle? Occasionally she has to hunt for a few minutes because I’ve thrown the toy into a deep drift, but this game would go on for eternity if I had that kind of stamina or desire to stand there in the snow and cold.
If I’ve had a cup of coffee she gets about ten minutes out of me. That’s ten minutes better than just giving up and sending her to a glue factory.