Sand Flea,
If you huning the beaches, forget the small coil, Get a 14 inch excellerator coil from Kellyco, This coil is T-Totally awesome in the sand, dimes and pennies easy at a foot got quarters in Atlantic City NJ. 18-20 inches deep. For the beach it's a must have coil on the mxt, Run relic mode 0 disc trigger forward , Dig it if it has a high or broken tone, low tones will always be iron, Put a piece of tape over the ID and go by the tones. Run the gain on 10 or the + #'s if conditions allow. I prefer the threshold just barely audible to just under sound, works great, Yeah white put out a 14 inch coil also, the have issues as did some of the excellerators, I'll stick with the ex. coils, I know they work, If it make some feel better they could always stick a whites tag on it ha ha ha .