I have for some time been watching the "Nutria" cache in the USA to ensure that it works OK, and I am intending to place a cache of this type in the next couple of weeks, having already identified an ideal location.
I considered the biggest problem to be the sharing of co-ordinates with other cachers who have not actualy found the TB, so have decided to use a locked cache with the key attached to the TB(the only thing left to do is to obtain/modify a container).
My cache will be located in Essex and I intend to request that the TB is moved to another cache within the same county.
I hadn't previously considered the problem of accidental finds, but I will probabaly now attach a laminated note to the exterior of the container.