Did some experimenting today with a 4x6 dd & the 6x10 both have about the same depth. Looking at the other coils that are available for the MXT I was wondering if anyone out there has used the 6" excelerator & if so how deep will it go for coins. I know the larger the more depth but also the more trash you get. The soil was very wet today & I was only getting about 5 to 6 " on both. I don't know if the wetness had something to do with it or not but it seems that I have gotten about 8" before.