amsterdam post it why not work
if you shop lines..you can make +.20 if you split runline and straight up bet.....such as a +140 one way on straight up underdog and run line dog at +140...in theory that would net .40 while risking 200 if you lost or 1/5.....if the fav doesnt win by 1 run on average more than 1 of of 5 times you can net money it woudl appear...
obvioulsy, you may need several books to find the right lines..and on a given day you may only find 1 or 2 games or maybe 0 games that meet the criteria to give you at least that 1/5 situation but i think it can be done...