nice discussion:
Im just the opposite, i try to decide the number and not let the number decide for me.. However there should be limits, i try and never lay over -1.50, only in a rare circumstance or moneyline parlay. One should give a lean to the dogs if possible, value can be found in the +1/2 goal, ive got 2 of them tonight.. I weigh heavily one teams dominance over another, I weigh whether a team is a good home team or a good road team, some teams are totally different at home or away. I cant tell you why, i love to take the hot teams and go against the cold teams..
Look at STL vs. Calgary tonight, Nobody is colder than stl at the moment (or almost nobody), however STL has owned calgary and especially at Calgary. This is a classic example of a no-play for me.. and if forced to play this game, id take STL +1/2 (even)..
You have a good set of rules, i dont like laying 1/2 goals either.. I will play an under, especially the under 5.5, when i have the game capped a 5. and for me its no ML favorites over -1.50.. also i try and not focus on single games when looking at my record or units won.. I like to look at a group of 100. then see how many favorites that ive played, how many dogs that ive played.. things of that nature.....