What makes it sketchy at times? Just curious. Here it's rain. It can be a gorgeous sunny day and then an afternoon tempest can show up and dump rain/ hail out of nowhere. Only April & May though and usually they are predicted, but if you're not watching the weather services, it's pretty surprising.
So people are guessing their skill level. Ya that can get weird. I see at other tracks they time everyone and reorganize by lap-times into categories. Morning runs can have a couple guys fast at other tracks then they're slow here so they make traffic jams. If so then they get bumped down a category. Other guys want to practice their passing so they sign up for slow groups and run the n00bs like cones, then get bumped up. I did that last wkend not on purpose. hahaha I got recommended a slower group because it was less crowded. It was great for confidence building. Then I got bumped up. ;P