When I was at WL in October 2007, we took the boat ONCE and ONLY once from the MK to WL at night. We were able to board it with an
ECV at the MK without problem (no comments of any sort from the CM on the boat other than telling me where on the boat to park the ECV). Unfortunately, when we got to WL, the boat was at a guess 3 to 6 inches below the dock level (we were NOT warned by the CM that it was a possibility and, not having boarded at WL originally, had no warnings).