I do like Addey's method. It's straight forward and getting to grips with the symbolism improves your astrology. : )

It's definitely the most consistently effective method, and it works with both trad and mod rulerships as well as the occasional asteroid.

I should look at the charts of the four horses who died Gullinbursti, Minella Reception, Clonbanan Lad and Marasonnien http://metro.co.uk/2016/04/09/grand-nat ... picks=true

The article says that since 2000, 42 horses have died at Aintree.