being as i cant reply to a certain thread on the other forum ill put my 2cents worth here...
now it seems to me either this has been deliberately left out because it is a little pearler....
or simplicity has been overlooked...anyhoo
here it is
bottom 3 runners
must be unitab rated 90>
must have a 1 2 or 3 in at least 1 of its last 3 runs
simplicity is the key boysn gals
postscript......only start betting after you get at least a place first...throws up alot of fourths