Transporting a yacht to the great lakes?

It doesn't exist because it's not necessary. As do the companies you are talking about, you drive, or hire a crew to drive, the boat up the east coast, the Hudson and the Erie Canal, or the St Lawrence Seaway if your boat is too big for the Erie.

Yup, I ran a 75' Hatteras MY from Ft. Laud to Chicago for the summer and back in 2008. I put on about 350 hours of engine time doing 10 knots (or less) 90% of the time round trip. Took the east coast up the Hudson river, across the Erie Canal to Oswego, NY then Lake Ontario, Lake Erie, Lake Huron, Lake Michigan to Chicago. On the way back Illinois waterway to Mississippi, then Ohio, Tennessee, Tenn-Tomm, Tom Bigbee rivers to Mobile AL, shot across the gulf to Clearwater, then took lake occeechobee across FL.

It took us about 30 days up and 30 days back......but would have been shorter if we ran at cruise and if we were in a smaller boat.

We did it in a 59 GB. It sounds like from your thread that you'll be in a much larger boat than can be transported by road, and your air draft will limit your path to clear a few of the bridges if you were looking at the New York Water Way.

We took the long way, bypassing the inlet at New York and turned the corner at Nova Scotia and made our way west from there. It's long, but quite peaceful if you take it all in. We scheduled 5 weeks from Ft. Laud. to Detroit and did it in 4.

Googling the great loop with give you a wealth of info on different options, scenarios, pros, cons, etc etc.

I just bought in November a 43' Sportfish, which was located on Lake Michigan, it's now sitting in indoor storage in Ohio and come May, I have a Captain bringing it to me in Westhampton Beach, NY. He has to go thru the NYS Canal System, some 30 locks. He already drove it from Bufallo Michigan to Marblehead, Ohio, over a 2 day trip.

I know of no other way.

Yes, I did the great loop. We had to lower the radar arch, remove the masthead from the radar arch and rotate it 60 degrees on saw horses, remove the bimini top and got a 75' Hatteras MY down to 18.6'.

If I had to do it all over again, I would definately take the Mississippi all of the way down. We were doing 14 knots, when we were at 1,000rpms and would normal do 9.8 knots with no current. There are only 3 locks at the end and it's about 300 miles longer......The Tenn-Tomm route left us with very few Marina's we could fit into, or we'd pass ones we could fit into at 11am and kept going, basically 1 every 4-5 days and it was very difficult to find a barge or a place to anchor out of the channel each night, or even a place to run it up and clean out the motors for 30 minutes every 6 hours. Also the 50ish locks REALLY held us up, there were at least 1/2 a dozen where we had to wait 3-4 hours for 1 pushboat and 15 barges to lock through. I averaged 90-100 miles a day, doing 1,000 rpm's or less 95% of the time (10 knots or less). We were underway about 14hrs a day......

What year was that?