Theres been a new outbreak of a fatal virus called HENDRA VIRUS.
Its a ZOONOTIC Virus. 5 horses and 1 person are already Dead.
http://www.dpi.qld.gov.au/cps/rde/dpi/hs.xsl/4790_11112_ENA_HTML.htm
for big shows, apply the the SHB(GB). you will need a reference from a registered judge before application can be accepted. Then, you will be given a Date (mine was at Robert olivers) where you will have a Assesment test. You will ride first then, a horse will be "stripped down" and you will...
try starting the canter in a circle then if she lunges in a correct lead she should get it right then ,
or try doing a 20m circle in trot then carry on in the circle and randomly ask for the canter