There needs to be more wildlife protection for the riders.
Not much more than can be done quite frankly.
The circuit was when I last went, fully fenced with a 6 - 8 foot cyclone wire type of fence.
The issue or one of them is that Wallabies and Roos can jump 6 feet high so if there are undulations around, and Phillip Island landscape is not flat, then a little bump and that 8 foot becomes easy for a wallaby. If they dont go over they can also dig and if there are gaps in the fence (ie. cut or damaged), it doesn ot take a big space for these things to get through - I work at a site that is fully fenced but there is a slight damage to one of the pieces of fence - I could not get through it easily - and full size adult roos can and will.
When I worked some meets at the island the circuit management did everything that they could do with regular fence checks and if there was a sighting they were off after the animal. If they catch it they will hunt it out but they are not easy things to catch ........... and not the smartest.
And that is the roos.
The Cap Barren gees have wings - how is that going to be stopped coming in .............. and they have bought riders down in the past.
Then seagulls etc.
Riders are just damn lucky that the penguins don't scheme something up at them - thios buggesr can be nasty
I have not been to the Island much, but been there for cars and bike racing and everytime I see roos or wallabies in and around the drive, not at the track. the place is a nature reserve so these animals are present and short of encasing the place is extremely high fencing or walls, there is not much can be done - the fact that wallabies are not that common on the place is in itself a great result when compared to other places