I hack away for an hour each way, especially on my home journeys. I actually appreciate the long train journey. Thankfully it is all one journey without changes. And train delays once I am on the train I don't actually mind. Though I go first class so I have a guaranteed seat with table and comfort. Otherwise, I'd be a miserable sod.
Though I also had to cut out all time wasting like tv watching, time sinks like free newspapers on the train, and ban myself from any gaming before 11pm.
With one kid it felt like I hardly had any spare time for hacking or anything, and I was so envious of my previous childless me with all that spare time I had then. Now with two kids I am envious of all the spare time I had with just one kid!