Take a look at the speeds. Ralph Hudson went 240 or so, Al Lamb about the same earlier (sorry - don't have the numbers in front of me - hope I'm not too wrong). If those guys are running below 250 - the track ain't great.
Here's a first-hand account from the FIM article listed above:
Ralph Hudson had a scary moment when he got some bad headshake at over 200 mph (321 km/h), but he backed off and kept it safe during his run. He made some chassis changes and returned to the course to record a speed of 233.559 mph (375.877 km/h). Not enough for a FIM Land Speed World Record, though he did reach an AMA record today.
"I think that's good enough. I had high hopes that we were going to be able to chase the 300 record here, but the conditions just don't allow it," said Hudson. "I talked to Al Lamb and he said he was having the same handling issues I was, that the front end kinda pushes and it doesn't go where you put it. [laughs] It needs to be a harder surface. It's much better than it was two weeks ago, but it's still not what we need.
"I think I've probably done enough. So, I think I'm just going to be satisfied and go home happy."