I usually don't dig them if I am coin shooting. If I am hunting relics I expect to possibly find some larger metal so I do dig them unless I can tell they are the size of a Buick LeSabre. So, it's not a do or not do question. I did dig a shallow overload once and found a dollar sized oil company token. I am more prone to dig it if it is shallow, but on my 2500 most overload items read out over 12" deep. Keep in mind I do not own a 1500 so there may be a difference in the operation of the two machines. Monty