errik said:
10? who mentioned 10 I use a 15 inch WOT on all mine with no problems and moving FAST is not always good
Let me better explain my opinions.
With the smaller coil it takes less time for me to find a target because I can keep a constant pace due to its being physically easier in rolling surf. I will toss out the word fast and refer to it as less "total elapsed time between target acquisition in crashing wave".
Once again for me pinpointing is more precise and takes less scoops to recover the target. On sand, wet or dry, or at high tide with slack water I can see the clear advantages of huge coil and perhaps I may buy one for those conditions.
I base this on my experience with both size coils under the same circumstances on the same day and at the same beach.