Would you recommend the 9" coil over the 11" , for hunting 90% of the time in trashy parks?
Yes.
I’ll expound a bit.
Even if we presume Deus 2 performance equaled the rest.
The use of 9” coil would have advantage in some scenarios over say an equally performing unit with 11” coil.
Some models don’t have 9” coils.
Now Deus 2 performance is definitely above average when it comes to VLF models.
So if you add this to the smaller coil, things in the wild can happen.
Might be best one detector model one coil size for more universal detecting I.E. old home sites, areas littered with iron, areas littered with modern trash.
And depth although a bit compromised the 9” coil gains some advantage on shallower and mid depth target unmasking/separation. So there is a trade off. Is it worth it minute for minute sweeping coil? To me it is.
This doesn’t mean 9” coil solves every detecting situation. Eleven inch coil on Deus 2 or even another model could win out. And the same said about an even smaller coil on another model, even the Hf elliptical coil using a Deus 1.