I just saw a surfboard on my bus from TCAT to Narita
Thanks for the tips. I looked at the Limousine Bus and I will miss the last bus in the evening - my flight arrives at 8:30 PM - on the way into Roppongi. I'll need to come up with a different option from Haneda to the hotel.
That's great that you've actually seen a surfboard on the bus. My worry was to arrive and find out that they won't take my board bag and I'd be stuck with having to hire a taxi van at the airport at enormous expense.