I agree that this was a really fun course, and the weather definitely made it more challenging. I've never run across runnable marshes before, so that was definitely a treat.
I had some trouble with 10 to 11, too. I couldn't find that ride, and after hitting that rootstock about 2/3 of the way over, I ended up looking too far south in that darker green area. The lack of topo detail here really confused me. Overall, it was a 7-minute leg.
Where was your big mistake? I'm curious.
Also, what was your route choice from 5 to 6? I backtracked out to the road and attacked from the SW, but I'm curious to how other routes worked out here. (I saw some people approaching from the SE, but I didn't talk to them after the race to hear how it was).
Yeah, from 10 to 11, I wasn't totally sure I was even on the ride until I reached the one-contour hill and the two rootstocks together to the NW of 11. The leg took me 4:53, which is about 20 min./km pace.
My mistake was on control 7, where I attacked from the trail bend to the W of the control. I went too far left (not paying enough attention to my compass) and missed high. The visibility was terrible there, so I spent some time thrashing around in the brush trying to figure things out before bailing out and re-attacking. The leg took me 5:22, for about 110m. I dropped diagonally down the hill to get to #8.
On 5 to 6, I went NNW to the trail, followed it to the bend, then went the final 70m through the brush. There was a fairly prominent unmapped knoll about halfway between the trail bend and the control, which I first mistook for the tip of the spur with the knoll on top, but I looked up and saw the actual spur and kept going. The control was about 5-10m farther N than I expected, because it seemed like the marsh extended right up to (and maybe into) the dark green area. The leg took me 2:44. It may have been as good or better to stay on the trail to the next bend to the North and go in from there.