Given it is an offficial fixture, the rules for missing it should apply as per all meetings...
And only if rescheduled, and riders already elsewhere, should any drop outs be allowed .
The BSP don't help themselves when these events always have riders missing from the original line up, and their compliance with riders dropping out just undermines both themselves and their competitions...
And running them so late in the season, (after many blank weeks during the summer for many tracks), is just asking for riders dropping out given many will have play offs in their respective leagues to focus on..
And also for the majority of competitors they potentially will earn less than a normal meeting...
The irony of that of course, being that the last decade or so has seen riders not take part, which then dilutes the prestige, which then reduces the fan numbers, which then reduces the money on offer..
Another vicious circle UK Speedway got itself into given its lack of clear independent, disciplined, leadership..