Hi Warren,
No thrusters. As Steve mentioned, there are 3 310hp engines, each with two counter-rotating props. The thrust is much more than Wild Blue. I can rotate the boat within its own length, but the bow is wide and high, and the boat is almost all cabin, making for a lot of windage. At 34 ton gross, it still can be moved by the wind. At slow speeds, the boat is more maneuverable by using differential steering with the engines as opposed to using the steering wheel. Within a couple hundred yards of the dock, I center the steering and stand in front of the throttles to steer, using just throttles. Reverse thrust stops the boat in very short order.
Depending on wind conditions (prevailing wind is usually on the dock), I bring the boat in at 45º or greater, pin the bow to the dock, a dockhand ties off the bow, I bring the stern in with the outside engine in reverse, then another dockhand ties the stern off. The bow is so high that I can't see the dock when I'm within about 5 feet... we rely on hand signals and the dockhands are instructed to "show hands" when they get the bow tied off.
At first glance, the three motors with 6 props turning seems over-complicated, but it is very impressive in performance and surprisingly nimble for its weight. The boat will jump up on plane in a couple seconds. The boat is just over 44 feet long and almost 16 feet wide; it draws just under 5 feet.
I really enjoy running the boat; the passengers have been mostly interesting. Dockhand training is frustrating, because each new hand thinks they can "wrestle" this boat at the dock (because they have a small fishing boat at home :roll: ); we have to explain to them that that kind of thinking is dangerous. I have seen many creative ways of improperly tying a cleat knot. :disgust
Two days ago, I met John and Edna onboard Far West - nice folks, but the long days on the boat haven't given me a chance to visit with them much, yet. I hope we can connect before they head out.
Today was a "half day" for us... we only put in about 7 hours. It was a nice day, so we came home to get in a motorcycle ride before it cooled off. Each turn of the road here is another beautiful view... much like the views from the boat. We first came to Yellowstone in 1973 and have been back many times since; the beauty and diversity is amazing. Working here is a completely different experience.
I've been asked if it gets old, running these scenic cruises... well, the light is different, the weather is different (and warm and sunny REALLY beats cold and snowy), each interpreter presents their own perspective... I work hard to give the passengers a good ride - their safety and comfort dictates each move I make on the boat. I brief new interpreters (the Park Service seems to have an endless supply) before we head out and let them know that I will try to put the boat where it will make the most sense for their program. There is some give and take with the presentation with most of them, and I will add comments. Some of the younger ones have their presentation memorized, and if I point out a bald eagle, you can see the panic on their face as they try to remember where they left off.

The interpretations I enjoy the most are when they tell the story of the lake and allow the magnificant scenery to be the star... the ones that make it seem like a "history lesson" are the least interesting - both for me and the passengers.
Probably more than you wanted to know. 8)
Best wishes,
Jim