As I learn more about ocean hydrodynamics both on the water and in the academic sense, there are more and more things I notice during my sessions.

I've had some sessions lately that would've otherwise been awesome conditions if not for a second swell coming in from another direction. Last night, I could see that the waves intermittently had a much difference appearance on an "every other" basis. The one swell had crests and decent faces emerging that were clearly different from the others that had rounded tops and reform-like appearance.

Just as we are supposed to hunt down the takeoff zone and ideal position in a wave, I noticed something else to scout out and certain waves that were not worth taking. What are other visuals you guys look for to seek out or avoid in wave selection and/or positioning?