We only use H-type connectors on overhead and would have buried a service encloure there and used an insulated multi hole connector, nothing but the temp board service would be direct buried, all our stuff would be in conduit in subdivisions that are 20 or so years old any older than that our stuff would be direct buried. Red tag the job, that was pretty good. If I had to use H-type connectors I would have a one shot tool with all but about a foot to 18 inches of the handles sawed off.