Hi LL,
We initially ran an even shorter course and ran the marks in an anti-clock direction for fear of issues of crossing. Problem was that all the paddling was on the R/H side.
By widening the markers, it allowed a paddle side change in the straight. We then added the figure 8 to force riders to pivot turn in both directions so that lefties wouldn't be disadvantaged. I initially thought the riders crossing in the middle may pose an issue but nothing could be further from the truth. Both riders come out of the turn at a wide angle and pass with plenty of water between them, then turn in the opposite direction thus relieving the tired paddling arm.
I am keen to hear of others input after you have given it a go. It really is a hoot and it is the only format of racing where I had a big

on my face the whole race.
DM