Hah, I've lost a few pennies to family members for that reason... At least it would be paid, need to add to the new detector fund.
I've found running low sensitivity on the 6" coil to be a bit of a swings and roundabouts situation vs the 11". Better target separation for sure, but I'm also digging much more iron. I'll keep it on for a bit to do over where that sixpence came out of, I've avoided doing so for ages as it's heavily contaminated with aluminium screw caps but I'll just have to dig them all up now. I feel like I could use a CTX 3030 in this situation.