For basketball, both NBA and NCAA, I make bets based off the difference between the line I create and the posted line. For spreads in NBA it would be greater than 2.5 points(ignoring points for 1 to -1), in NCAA it is closer to 3.5. Totals similar, 3.5 and 5 points respectively. I wonder though, is this the best way.
When I think about it, 2.5 is worth much more on 4 points spread vs 24 points, but I treat them the same. Totals this is less of an issue. Does anyone have a better way of doing this, something like % of difference to the spread?