Dog sitters

I've seen several that offered outside services - but as westernrvparkowner says, it could be a recipe for disaster? My former Aussies and Cattle Dogs would NEVER have let anyone in our RV, even after introductions, etc, if we weren't there. My current dogs are incredibly-friendly, but since they're still half-Aussie, I wouldn't trust that they either would be protective - or would escape and run.