Fair play. Only money I ever made on football betting was laying the draw and being really disciplined. Correct score stuff was the other end of the spectrum! But if you have the time and inclination and if it works that's cool.
Why do people do correct score bets (apart from arbing)? Surely the only worse bets are the "scorecast" type "Murray to score and Brighton to win 2-1" bets where you get about 15/1 if you're lucky. Absolutely terrible odds every time.
The bookies must make more off these than anything else.