Playing the back marker

You're cruising along, have a couple of wins under your belt, when you have to play someone at the tail end of the field (note, I'm talking about round robin events). Suddenly you have to make a choice. Do you (a) decide that the point is in the bag no matter what you do, and so play for the brilliancy, (b) play extra cautiously as you don't want to blow a sandshoe, or (c) ignore the scoreboard and play the position on the board?
Most people would say that (c) is the correct choice, but I suspect that in practice, the actual split may well be 40% a, 40% b and 20% c.
An extreme example of some choosing box A was Frank Marshall in the 1903 Monte Carlo tournament. Although he finished slightly below 50%, he decided to have some fun against possibly the most famous 'back marker' in tournament history. This was the event where Charles Paul Narcisse Moreau (known to chess history as Colonel Moreau) scored 0/26, losing all his games to the other 13 competitors. While Marshall was known for his attacking play, this game saw it taken to the extreme, playing a Muzio Gambit, offering two pieces within the first 8 moves. The unlucky Moreau was doing OK until move 16, where Bc6 turned out to be the losing move, as the pin down the d file resulted in material lose.

Marshall,Frank James - Moreau,C [C37]
Monte Carlo Monte Carlo (23), 13.03.1903

1. e4 e5 2. f4 exf4 3. Nf3 g5 4. Bc4 g4 5. O-O gxf3 6. Qxf3 Qf6 7. e5 Qxe5 8. Bxf7+ Kd8 9. d4 Qxd4+ 10. Kh1 Bh6 11. Bd2 Qg7 12. Bb3 Nc6 13. Bc3 Ne5 14. Qd5 d6 15. Rd1 Bd7 16. Ba4 Bc6 17. Bxc6 bxc6 18. Qxe5 Qg4 19. Na3 Kd7 20. Nc4 f3 21. Rxd6+ cxd6 22. Qxd6+ Kc8 23. Qxc6+ Kd8 24. Rd1+ Ke7 25. Qd6+ Ke8 26. Re1+ Kf7 27. Ne5+ Ke8 28. Ng6+ Be3 29. Rxe3+ Qe6 30. Qxe6+ Kd8 31. Ba5# 1-0