So... some observations about my Flying Stupidity/Ptarmigan father-son duo.
Flying can't handle Class I. He draws mediocre/bad odds, and keeps losing, but not far enough back to lose rating points. It's infuriating. They need to change this system. He belongs in Class II.
Ptarmigan is probably the Fernando Tatis Jr to Flying's Fernando Tatis. He's on quite a run. In his last 10 races, he has 5 first, 3 seconds, a third, and a twelvth. Some of those were ones I intentionally tried to lose by entering him at non-preferred lengths!
https://www.hawku.com/horse/69570
He's about to bust out of Class IV, so we'll see how he handles the next class up. He seems a lot more U-shaped than his dad, though, which is good.
BTW, I am not impressed with these speed analysis tools. I think what they fail to take into account is that the horses tend to mimic the speed of the competition. So if you have a track where everyone is running fast, you'll also run fast, even if you're a donk. So the average speed & standard dev really doesn't mean much.
So far the only metrics which seem to matter are the ones already on knowyourhorses and hawku -- place distribution, average odds, and average odds by length.