On the dry sand, yes, I fill my holes (just knock some sand back in). And on the wet sand, in the inter-tidal zone, yes I fill my holes there too: 2x p/day, at high tide, presto, holes filled. I know this is controversial, and I confess to not having read all the posts on this thread. But ......... in my 30+ yrs. of beach hunting, I've only had 2 times of someone saying something. But on the other hand, given enough years in this hobby, I'm sure we've ALL heard gripes for SOMETHING. Heck, one time I even had a lady gripe to me that my metal detector was bothering her dog! I think she thought it was emitting some sort of sound wave, or frequency, that only dogs could hear?