Do you ever? Ranch, you ask some interesting and thoughtful questions. For me, I find myself involved in a lot of races every day. I play horizontals, primarily P4 and P5's. As a rule, there are usually 1-3 races in each sequence where I have a strong opinion for or against a horse. That leaves 2-3 races on each wager where I don't have a strong opinion. Many of those races include low percentage riders and trainers. I do my best to evaluate each of those races and build tickets that make sense to me. Sometime my instincts are wrong. I manage these situations by varying the size of each bet. I may have some 50 cent P5's using fringe horses while my stronger opinions may be in $3, $5 or $10 denominations.
If I was a WPS player it would be prudent to pass the race but I rarely pass a horizontal sequence due to a race or two.