I'm also a fan of measuring our A-C marks because then you can tell how fast you are going, kind of like how race cars measure their lap times. If we would try to always set the same distance from A-C then we could use more data to derive a good baseline as to how fast each cat is, in knots, mph, what ever. But be consistant.

Does anyone know about how far the A-C distance is at the Olympic Tornado events? Is there any specified distance as minimum or maximum? I'm thinking one mile even ought to be pretty easy to do using a hand held GPS unit.