I said that on updates about the track grading, have watched a lot of Scunthorpes home meetings (great racetrack) and there's very rarely a grade especially after 4 heats,I don't get why you'd do that when 10 in front.
There's a big spread of riders ability here,can see some strung out races, maybe they should think of a handicap system regarding what league they ride in to balance it up, just my thoughts