The box draws are very important.

If the greyhound is a notorious slow beginner then inside draws will bury it.

Fast beginners can usually overcome any draw except maybe the squeeze boxes.

Angle Park inside boxes are actually a disadvantage because of the angle of the trap, why they don't fix this up baffles me.
This is commonly known amongst the hound trainers in S.A.

Anyhow good luck with the project.

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Treat your selection and staking methods not with optimism, nor with pessimism, but with realism.