It's not as simple as you would have it to be. The first hurdle would be actual definition of the Mobile home.
If this is truly a mobile home, built on a chassis and not permanently staked down on a concrete pad, I do not believe that you can attach to a service supply by any other means than a max 26" cable. Again, that's a code issue. If it has to stay on the cable, you cannot bury the service feeds. By definition the connector to service has got to be a quick disconnect.
However, a manufactured home or a mobile home that is no longer "mobile", you know permanently parked on a concrete pad and permanently lashed down. Are a different set of Code animals.
These types of homes can have lateral service installed or overhead service. The key has to be the legal description that the local ruling authority would use to define the unit.
Once you get that out of the way, call the power company and see how much (if anything) to properly connect your home. NEC code owns from the drop or lateral into the house. NEC does not own any part of the Service Utilityies equipment or conections.
I am not an expert on Code, but I am familiar enough with it to be dangerous, so please make sure before the county ends up owing the mome, land watrer rights, children, e levels down and whatever else they figure a way to fine you for.