15 inch coil

I hunt for Civil War relics and also do some coin hunting. I know the current wisdom is the 15 inch coil is a little deeper than the stock coil and covers a little bit more real estate per swing. But I had noticed that it also makes targets ring up more solid and less jumpy than the stock coil...

Ok, I have the 15 inch coil on my 800 and have heard you need to slow down your recovery speed to 3-4 and swing slowly when using the 15 inch coil. Does this mean swing slowly after you get a hit and you can swing at your normal speed before you get a hit? I notice on slow recovery speed it...

Field 2, sens 19, 50 tone, recovery speed 4. Noise canceled and ground balanced. Note this well hunted soccer field was almost a 100% iron free environment. (and many thanks to the forum members who alerted us to the 4 recovery speed setting for the 15” coil). Found three zinc pennies at 5-8...

I have read where several Equinox owners with the 15 x 12 inch coil reporting over all not so good results with the coil use in the default settings. A number owners have said you must use recovery speeds 5 or below and 4 seems to be the best. Why is that? Just the nature of larger coils?

I have decided to purchase the 15 inch coil and have placed the order. I have thought about my type of hunting, coins in parks and relics in trashy parks (not national or state) and how the 15" will help. main benefit for me is coverage. Lot of the parks have nice flat open spaces and same...