pay close attention to how and where the waves are forming in the line-up. Usually the best spot is gonna be the most crowded. (not always though but in general) I usually try to see where the "whitewater carpet" is (this refers to after a wave has broken it will usually leave a whitewater foam trail leading back to where it broke. I follow that line and sit just a tad further out than that point. Naturally if you observe it more you pick a better spot. Being in a good position enables more waves that you can catch and less paddling effort required. Also remember that peaks can be shifty depending on swell and other factors this is where local knowledge and experience pays dividence. Although if the peak is ultra shifty it involves a little bit of luck. In such instances look for the waves outback and try to make a judjement call where its gonna break and paddle towards that point. The more you absorb the layout of the surf on a particular day the more waves you will catch.
If none of the above is usefull then paddle harder and dig deeper
