The main thing seems to be adequate drainage, any stadium that has a grass centre has no problem because they can just dig it up and put in soak aways.
I've always thought that the covers need to be attached to the fencing so they slope down to the centre of the track and obviously further onto the centre green to stop soak back.
As always with our tracks is the ownership problem but in lots of cases if the will is there?
Poole for instance, centre green, council owned, easily sorted?? But it's always as if the Poole management aren't too bothered with the track, even their own riders have been very critical of the track, do Matt and Giles do getting their hands dirty, is that the problem?