We always transferred the third train on in the morning and off at night. There never had to be any supervision for that. It was part of our training, is explained thouroghly in each ride's manual, and it really isn't that difficult. Basically on Magnum to transfer the third train on (And perform 2 parts of the block check. A train should stop in the safety brakes if one is still in the ready brakes and a train should stop at the top of the lift if one is present in the saftey brakes. Another test is the station sensors tested by making sure a train will not come in from the ready brakes when the station is occupied), you cause a setup by dispatching a train and leaving another in the ready brakes. The dispatched train will stop in the safety brakes (after the third tunnel). You then bring the train from the ready brakes into the station, lock the bars, wait for the station delay and dispatch that one. It will stop at the top of the lift. At this time, you switch to transfer mode (the person in charge at the time has the keys to do this) and someone out at transfers moves the transfer table over and releases the third train. After the transfer table is moved back and secured, the ride is switched back to run mode, the safety brakes are released and the lift is started back up. There is a 75 second clear blocks delay that makes sure nothing "bad" can happen during transfers. After all three trains cycle through, we test ride each one and open the ride. The whole process takes place at CP between about 9:25 and about 9:50. Some ops have to report along with the team leader or assistant team leader at 9:00 to do a trackwalk (making sure track/ride area is clear, cleaning, and locking all gates) and walk the third tunnel.
As for having to have a supervisor or mechanic present, that really isn't practical in the morning or at closing since there aren't physically enough of them to be at every ride. As The Montus said, in the event of mechanical problems, Maintenance and supervision would be there to assist, but for normal opening/closing duties, it is the crew's responsibility.
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-Matt
2001 Magnum Crew
*** This post was edited by MDOmnis on 12/10/2001. ***