Harr!
If ye be in need of more crewmates and yer friends haven't joined you on the seas yet. Now might be a great time for them to consider joining you. Starting today for Xbox Live Gold members, you can pick up a copy of Sea of Thieves for 50% off it's original price. If they ever needed a financial motivation to buy it, now might be a good time!
If your friends are not Xbox Live Gold members, then they are able to purchase the game for half off starting November 19th.
Full list of Xbox Black Friday Deals is right here on Microsoft's blog.