In a study by a Welsh pedigree researcher friend of mine and to whom I supply my GSV numbers for his studies in return, of every maiden race in England in 2004, I noted that often the winner of a race had the second highest GSV. Preliminary results of that file which contains ~800 races [I got bored counting how many, sorry] composed of 9825 runners [some ran in multiple tries to break their maiden (excel file did the counting here)], shows the potential of a flat profit betting the two highest GSV scores both to win.
For several weeks I have had promising results betting the two highest GSV in an exacta box, but I have not done validation studies, just that my cash voucher has not decreased as normal when I am doing normal handicapping [lol].
So on Sunday, I decided to bet the two highest GSV numbers both in each race at Hollywood and bet them in an exacta box. Here are the results [***Remember this is just one day....definitely no guarantee]:
Race 1...Highest GSV wins, $10, 2nd highest is 2nd, exacta = $61.80
Race 2...GSV fails
Race 3...Highest GSV 2nd, 2nd Highest Wins, $8.00, exacta = $20.00
Race 4...GSV fails
Race 5...Highest GSV wins, $8.20, 2nd highest is 7th
Race 6...GSV fails
Race 7...GSV fails
Race 8...Highest GSV 2nd, 2nd Highest Wins, $16.40, exacta = $45.20
Race 9...Highest GSV 2nd, Highest GSV Wins, $29.80, exacta = $174.40
Results: $2 betting units
Highest GSV + a whopping 80 cents profit
2nd Highest earns $36.20 profit
Exacta profit is $265.40
If you have a subscription to Pedigree Online, the companion site of Pedigree Query, you can verifty these profits because they held even with the old 2005 numbers.
Not quite a new car, but at least pays the gas.